For most of the twentieth century, a person who died in England and Wales and was to be cremated needed two doctors' signatures. The first doctor wrote the cause of death. The second, who had not treated the patient, wrote a confirmatory certificate known as Form C. In Hyde, a town on the eastern edge of Greater Manchester, the doctors of one group practice signed Form C for the patients of a single-handed colleague, Harold Shipman, and took him at his word. Dame Janet Smith, the High Court judge who spent four years examining his career, later called that form "wholly inadequate as a safeguard against concealed wrongdoing."
The cases here share a feature that has little to do with their sentences. In each, a health worker killed or tried to kill people who were in the care of a hospital or care home, and in each, for months or years, the institution’s own checks did not see it. What changed afterwards is the subject here: a certificate redesigned, a pharmacist placed on every ward, an inspector asked to ignore reassurance, a regulator told that a file left "banking with notice" is not an investigation. Some of the changes are law. Some are recommendations that governments accepted in part or not at all. A few are only promises. Each case is given briefly, and the weight falls on what the inquiries and legislators did with it.
On January 31, 2000, a jury at Preston Crown Court convicted Harold Shipman of murdering 15 of his patients and of forging the will of the last of them, Kathleen Grundy. He was 54, a family doctor with about 3,000 patients. Mr. Justice Forbes passed 15 life sentences and told him: "In your case, life must mean life." Shipman never admitted a killing. He died in prison at Wakefield on January 13, 2004, the day before his 58th birthday; an inquest jury returned a narrative verdict that he had killed himself.
The 15 were a sample. A public inquiry chaired by Dame Janet Smith reported in July 2002 that he had killed at least 215 patients between 1975 and 1998, and the government’s own account of the later reports put the number at around 250 of his patients over twenty or more years. Those figures are findings of an inquiry, not convictions. Prosecutors had decided that a second trial could not be fair.
He was caught by a forged will, not by any system. In March 1998 a Hyde doctor, Linda Reynolds, telephoned the coroner for Greater Manchester South to say that in three months Shipman had signed 16 cremation certificates while her own practice, about three times the size, had recorded 14 or 15 deaths. The police inquiry that followed, in the spring of 1998, turned up nothing against him; the Inquiry’s Second Report, published on July 14, 2003, examined it. What ended his career was a will leaving the estate of Kathleen Grundy, 81, to himself, which her daughter, a solicitor, refused to believe.
His history had also passed through the profession’s hands once before. In 1976, at Todmorden in West Yorkshire, he was convicted of offenses involving the misuse of a painkiller and forging prescriptions, and was reported to the General Medical Council. He was not struck off. Peter Devine, the Todmorden News reporter who later worked on the story, wrote that he had been forgiven. In 1977 he joined a group practice in Hyde, where he had not hidden his conviction and persuaded his new partners, as he had persuaded the Council, that the problem was behind him.
The public inquiry began in February 2001. Its Third Report, on death certification and coroners, was published with the Second Report on July 14, 2003. It concluded that the systems for certifying deaths and reporting them to coroners "had failed to both deter Shipman from killing his patients and to detect his crimes after they had been committed." A doctor effectively decided whether a death went to the coroner, an arrangement the report called unsatisfactory and not to be allowed to continue. At one crematorium a medical referee had authorized the cremation of 176 of his patients, 107 of whom he had killed, in what the report described as essentially a clerical check. Dame Janet recommended that the coroner system be retained "in a form entirely different from at present," with medically qualified coroners and trained investigators, and a single system of certification for every death, whatever follows it.
Her Fourth Report, published on July 14, 2004, dealt with controlled drugs and recommended stronger controls on how they were prescribed and on tracking them from prescriber to dispenser to patient. The Fifth Report, on December 9, 2004, examined how complaints about family doctors were handled and the work of the General Medical Council. The sixth and last, Shipman: The Final Report, was published at Manchester Town Hall on January 27, 2005. The same day the Health Secretary, John Reid, announced a review, led by the Chief Medical Officer, of how doctors' fitness to practice was assessed and of the Council’s role.
The government set out its response in February 2007 in a paper called Learning from tragedy, keeping patients safe. Every health organization was required to appoint an accountable officer for the safe management of controlled drugs, under section 3 of the Health Act 2006 and regulations made that year. On medical regulation it proposed an independent tribunal for final decisions on doctors' fitness to practice, the civil standard of proof in such cases, and a stronger system of appraisal and revalidation. A draft Coroners Bill had been published in June 2006. The government also accepted the principle of independent medical examiners who would check the cause of every death not referred to a coroner, whatever method of disposal followed.
That last change took the longest. In a written statement, the Welsh government announced that the statutory medical examiner system and the new death certification rules came into force across England and Wales on September 9, 2024, noting that the Shipman Inquiry had first proposed medical examiners in 2003. The interval between a recommendation and its enactment was twenty-one years.
Elizabeth Wettlaufer, a registered nurse in Ontario from 1995 to 2016, pleaded guilty in Woodstock on June 1, 2017 to eight counts of first-degree murder, four of attempted murder and two of aggravated assault. The victims were fourteen people in her care, most of them elderly residents of long-term care homes in Woodstock, London and Paris, Ontario, between 2007 and 2016. She was sentenced on June 26, 2017 to life with no parole eligibility for 25 years.
No one had suspected her. The offenses came to light in September 2016, when she checked herself into a psychiatric hospital in Toronto and told her psychiatrist what she had done. The sentencing judge, the police and the prosecutors all said she would never have been caught otherwise. The psychiatrist notified the College of Nurses of Ontario on September 29, 2016, the first word the College had of any criminal conduct.
The College had, however, seen her before. In 1995 she was reported to it after an incident involving a controlled drug at a northern Ontario hospital, and her license was put under conditions, which were lifted in May 1998. In 2014 the care home in Woodstock that employed her ended her employment after a series of medication errors. It filed a termination report with the College dated April 17, 2014. The College decided that no investigation was needed and placed no restrictions on her license; the report was kept on file in case further concerns arose, a step the inquiry that followed called "banking with notice." The care home had also given her a reference letter and a payment of $2,000.
On August 1, 2017 the Ontario government set up the Public Inquiry into the Safety and Security of Residents in the Long-Term Care Homes System, under Commissioner Eileen E. Gillese. Her report, released in Woodstock on July 31, 2019, ran to four volumes and about 1,500 pages. She reached three principal findings. The offenses would not have been discovered without Wettlaufer’s confession. They resulted from systemic vulnerabilities in the long-term care system, not from individual or organizational misconduct, so she made no findings of misconduct against anyone. And the system was strained but not broken, its regulatory framework a sound base to build on. The vulnerabilities she named were medication management, staffing levels, the use of agency nurses, oversight of home care, and the way deaths were reported and investigated.
The report made 91 recommendations, grouped under four strategies: prevention, awareness, deterrence and detection. They included a new unit to help homes adopt best practices, better training and supervision of staff, steps on agency nurses and home care, more registered staff, stronger medication management, better analysis of possible overdoses, grants of up to $200,000 per home for infrastructure changes, a study of staffing levels, an overhaul of the institutional patient death record with electronic filing so that clusters of deaths could be tracked, and better communication between the ministry and the College of Nurses. Recommendations 40 to 49 were directed at the College itself. A researcher who has studied killings by health care workers for decades told the inquiry that there had been no clusters of deaths or rises in incidents that supervisors or software could have flagged. "It is not possible to detect or deter something unless you are aware it exists," Gillese said when she released the report.
Niels Högel was an intensive care nurse in northwestern Germany. On June 6, 2019 the Landgericht Oldenburg convicted him of 85 murders committed between 2000 and 2005 at the hospitals in Oldenburg and Delmenhorst, acquitted him on 15 further counts for lack of evidence, and sentenced him to life with a finding of particular gravity of guilt and a lifetime ban from nursing. The conviction became final in September 2020. It followed an earlier conviction, on February 26, 2015, for two murders, two attempted murders and dangerous bodily harm at Delmenhorst. By an order of March 17, 2026 the court fixed his minimum term at 28 years.
What made the case a matter of procedure was how long the hospitals knew. At Oldenburg in 2001 the unit kept a tally of the nurses on duty at resuscitations and deaths, a list later described in court. Högel’s name had the most marks, 18, the taz reported in 2019. A handwritten note on the list said that endangering the department and the hospital was not acceptable and that the suspicions were not enough to inform prosecutors. The list stayed inside the hospital. According to the prosecutors who later charged his superiors, the people responsible had recognized the danger by the end of October 2001 at the latest; several meetings discussed calling in law enforcement, and the decision was not to inform the police. He was moved to another department, and then to a second hospital, where colleagues gave him a nickname that translates roughly as "resuscitation Rambo."
In June 2005 a colleague caught him. A police investigator testified in 2019 that the whole case could have been dealt with in 2006 or 2007. When the police first asked, the hospital refused to name patients, citing data protection. The case passed through several prosecutors. Presiding Judge Sebastian Bührmann apologized on behalf of the justice system when he sentenced Högel in 2015. Years had passed, he said, between the first concrete suspicion and the trial: "That was not right." The Oldenburg prosecutor’s office later apologized publicly for the delays.
A police special commission, named Kardio, presented its findings in August 2017 after almost three years' work. It said Högel may have killed 84 more patients between 2003 and 2005. Investigators had tested 134 former patients in 67 cemeteries, reviewed about 500 patient files and nearly 300 expert reports, and developed new laboratory methods. More than 130 other patients who had died on his shifts could not be examined, so that the causes of their deaths could hardly be proved. The commission’s head, Arne Schmidt, said suspicion should have been raised much earlier at Delmenhorst.
Accountability for the institutions proved harder than accountability for the man. In September 2019 prosecutors charged former superiors and colleagues of Högel. A trial of the superiors opened in February 2022, and on October 13, 2022 they were acquitted, the prosecution itself having asked for acquittal. The courts could not show that they had acted with intent.
The legislative change came from the state. On October 24, 2018 Lower Saxony amended its hospital law, and from January 2022 it made hospital pharmacists mandatory in its clinics, the first German state to do so. They advise doctors and nurses on medications; hospital operators decide how much time they spend and on which wards, and a pharmacist must have completed or begun at least three years of training in clinical pharmacy. The hospital association supported patient safety but said the legislature had gone too far and the costs fell entirely on the clinics.
Beverley Allitt was an enrolled nurse aged 22 who harmed 13 children on Ward 4 of Grantham and Kesteven General Hospital over about two months in the spring of 1991. Four of the children died: three babies and an 11-year-old boy. Nine survived, some with lasting harm. On May 28, 1993 Mr. Justice Latham gave her 13 life sentences, one for each child, after a Nottingham jury convicted her of four counts of murder, three of attempted murder and six of causing grievous bodily harm with intent.
The Health Secretary, Virginia Bottomley, ordered an independent inquiry under Sir Cecil Clothier. Its report, laid before Parliament on February 11, 1994, concluded that a laboratory result showing that a baby had been deliberately harmed reached the ward on April 12, 1991, while the police were not called until April 30. In that interval another child died. Bottomley told the Commons that nothing in Allitt’s sickness absence had suggested she was a danger, and that staffing by trained children’s nurses on the ward was below the regional health authority’s standard. Pre-employment checks were later described by the Thirlwall Inquiry’s summary of the report as unsatisfactory, though the Clothier inquiry doubted that proper procedures would have identified her as unsuitable at that stage of her career.
Its main lesson was simple, and it was a lesson about attention: that everyone caring for children should keep in mind the possibility of deliberate harm. Allitt has been held in hospital rather than prison. Her minimum term of 30 years expired in November 2021, but a patient held in hospital cannot be considered by the Parole Board. In 2023 she asked a mental health panel to move her to a prison, and she was still at Rampton Secure Hospital in Nottinghamshire that October.
Lucy Letby was a neonatal nurse at the Countess of Chester Hospital. In August 2023 a jury at Manchester Crown Court convicted her of murdering seven babies and attempting to murder six others in the hospital’s neonatal unit between June 2015 and June 2016. A second jury convicted her in July 2024 of the attempted murder of another baby girl. She is serving 15 whole life orders.
She has always denied harming any baby. The Court of Appeal refused her permission to appeal in May 2024 and again in October 2024. A panel of doctors and scientists working with her new legal team has disputed the medical evidence on which she was convicted, and the Criminal Cases Review Commission confirmed on February 13, 2026 that a review of her convictions is under way. In January 2026 the Crown Prosecution Service decided not to charge her over further babies; that decision was upheld on review in August 2026. The convictions stand. Neither the review nor the public inquiry that followed decides whether they are safe: the inquiry did not reexamine them.
That inquiry, a statutory one chaired by Lady Justice Thirlwall, examined how the hospital responded, and its report was published on September 15, 2026. It described a "complete failure to protect babies" and said the collapse and deaths of some babies "could have been avoided" had safeguarding practices been followed. The sequence it examined was one of institutional reluctance. Senior doctors raised concerns about the number of deaths and collapses; Letby was removed from clinical duties in June 2016; an inquest into the first death in October 2016 returned a narrative conclusion, and the concerns about her were not mentioned at it. Senior nurses, the inquiry concluded, "never accepted" that the consultants' concerns were, or might be, justified. The consultants were themselves investigated during a grievance Letby brought, and three were told to apologize to her. Plans to return her to the unit were drawn up and later abandoned. Senior doctors first contacted Cheshire Police in April 2017, and the investigation opened in May 2017. The parents, the inquiry concluded, learned only in 2018 that a nurse’s actions might have caused the collapses and deaths.
The report made 14 recommendations. They include video monitors in every cot and incubator in neonatal units, so that parents can observe babies remotely at any time, with NHS England to set out a plan by March 31, 2027; Thirlwall said that with such monitors the harm to the first four babies "would probably have been detected." Until digital devices restrict access to a medicine kept on the unit and record each access, trusts should install CCTV on the places it is stored, keeping recordings for at least 28 days. Trusts must show that moves of senior managers to other trusts are not based on a "lack of capability or misconduct." Every manager should have an individual duty of candor to patients and colleagues, and a senior managers' code should say from the first line that patients come first. All staff, including board members, should be trained on concerns about deliberate harm by staff, and by March 2027 staff contracts should oblige employees to follow safeguarding guidance. Trusts should monitor child and baby deaths and have a set route to senior management for concerning trends; NHS England should produce a one-page protocol under which suspicions of deliberate harm are acted on "immediately," with the accused moved as a "first step"; computer systems should be harmonized by December 2028; and the Care Quality Commission should carry out unannounced inspections in which inspectors do not accept what they are told at face value.
The inquiry also went back to Grantham. Its legal team prepared a table of earlier inquiries and recommendations and whether they were implemented, and the Clothier report was part of it. The Health Secretary, Yvette Cooper, answered in the Commons on the day of publication. She set out immediate actions on patient safety, safeguarding and accountability across the NHS.
In April 1989 four nurse’s aides from Pavilion V of the Lainz hospital, a city-run hospital in Vienna whose First Medical Department cared for elderly and often frail patients, were arrested on suspicion of killing patients. The case reached the police because an 80-year-old patient suffered a sudden, unexplained drop in blood sugar and survived; a suspicion described as "more or less vague" went to the city’s health councilor, Alois Stacher, and then to the police. On April 7, 1989 Waltraud Wagner and Irene Leidolf made their first confessions at the Vienna police security office. Wagner went through a ward death book and marked 39 names as patients she had killed. She later retracted that confession.
At the trial, which opened in February 1991 and lasted 17 days, the prosecutor, Ernst Kloyber, said the ward’s death rate had been three times the normal rate when Wagner was on duty, and that the charges were "only the tip of the iceberg." He rejected the language of mercy that two of the defendants used for what they had done. The step from killing terminally ill patients to killing burdensome ones, he said, led to "that which was known as euthanasia in the Third Reich": "And that’s a door that should never be pushed open again." On March 29, 1991 a jury in the Vienna Provincial Court convicted Wagner of 15 counts of murder, 17 of attempted murder and two of bodily harm, and she was sentenced to life. Leidolf also received life, for five murders and two attempted murders. Stefanija Mayer received 20 years and Maria Gruber 15. Wagner and Leidolf were released on parole on August 7, 2008; the Justice Ministry had said in July that both would be freed early for good behavior, and the Associated Press noted that a life sentence in Austria typically meant about 15 years.
The record of what Vienna changed is thin. Testimony described the state-run hospital between 1983 and 1988 as understaffed and poorly supervised, UPI reported, and Stacher said that neither patients nor relatives had complained about the aides or the care on the ward. In the week before the verdict, the City of Vienna pledged to renovate and modernize several geriatric wards in its hospitals. The aides, Stacher said, had used methods that were barely detectable in clinical terms, and he added that without the confessions the case could hardly have been solved from the medical side.
On November 20, 2006 the Kempten Regional Court convicted a nurse at the hospital in Sonthofen, Stephan Letter, 28, of 12 counts of murder, 15 of manslaughter and one of killing on request, covering the deaths of 28 patients between early 2003 and July 2004. He was sentenced to life, the court ruled that his crimes were serious enough that he would not be eligible for release after 15 years, and he was banned from nursing for life. The criminal police chief in Kempten, Albert Mueller, called it "the biggest series of killings in postwar Germany." His lawyers said they would appeal; the judgment was not yet final in August 2007.
None of the deaths had been treated as suspicious. In July 2004 police looked into reports that drugs were missing from the hospital, and they identified him as a suspect by comparing the times at which patients died with his hours on duty. Investigators then reviewed more than 80 deaths during his time there and questioned more than 200 witnesses. The relatives of some patients told reporters that their family members had been recovering and were looking forward to leaving hospital when they died unexpectedly.
The change this case produced was in the literature. Karl Beine, a psychiatrist at St. Marien-Hospital in Hamm, placed Sonthofen as the eighth of the cases he reviewed in an article on series of killings in hospitals and care homes in Deutsches Ärzteblatt in August 2007. He listed signs that had been noticed too late or not acted on in the cases he studied: medicines given without a prescription or without being recorded, unusually accurate predictions of when patients would die, nicknames such as "angel of death" among staff, and a brutal or cynical tone. Colleagues, he wrote, showed an active not-wanting-to-know. He criticized death certificates that were delayed, superficial or skipped, and supervisors who met early suspicions with weak inquiries, indifference or denial. He recommended closer monitoring of unexplained drug orders and use, stricter checks of death certificates, toxicological tests when suspicion arises, and a working climate in which staff could speak openly about strain and aggressive feelings. He warned against explaining such crimes too quickly as the product of an inhumane health system, which in his view turned the perpetrator into a victim.
In March 1998 a respiratory care therapist on the night shift at a Glendale hospital, Efren Saldivar, told police that he had caused the deaths of 40 to 50 patients since 1989. He was held for two days and released, because there was no evidence that any crime had happened. A search turned up nothing. The state Respiratory Care Board suspended his license on March 27, 1998, and the hospital placed its whole respiratory care staff, about 40 people, on paid leave while it investigated.
Proof arrived three years later. A police task force reviewed deaths on his shifts, the Los Angeles County coroner examined samples from 20 patients, and a chemist at Lawrence Livermore National Laboratory identified a drug in samples from six of them. Detectives had been told that such a thing could not be shown in tissue after death; the laboratory adapted its methods. Saldivar was arrested and charged with six murders in January 2001. On March 12, 2002 he pleaded guilty to six counts of first-degree murder and one of attempted murder, with the special circumstances of multiple murder and murder by poison, under an agreement that removed the death penalty. On April 17, 2002 Judge Lance Ito sentenced him to six life terms, plus 15 years to life for the attempted murder. How many patients he harmed has never been settled; he gave different numbers at different times, and the prosecutor said the true total would probably never be known.
Before the confession, colleagues had talked. One respiratory therapist later told police that another had mentioned a "magic syringe" more than a year before the investigation. Staff joked that he had the "magic touch," and in the spring of 1997 a fellow therapist raised his suspicions with a supervisor, though there was no proof and the two men were known not to get along. No change in hospital procedure was reported as a result; the lasting alteration was in what a laboratory would attempt.
Chronology does not sort these cases by what they produced. Shipman, whose killings began in the 1970s, ended up reshaping the certification of every death in England and Wales, in law that took effect in 2024. Chester, the most recent, produced fourteen recommendations that include a camera over every cot. Lainz produced a pledge to renovate wards. In between came an accountable officer for controlled drugs, a pharmacist placed on the ward in Lower Saxony, and a commissioner in Ontario whose 91 recommendations were paired with the conclusion that she could name no misconduct.
The speed varied as much as the content. England and Wales took twenty-one years to put medical examiners into law. Lower Saxony passed its hospital law in October 2018, about three years after the first Oldenburg verdict, and the mandate for pharmacists took effect in January 2022. In Germany, the superiors who had sat through meetings about whether to call the police were acquitted in 2022, because intent could not be shown.
What the inquiries kept asking was narrow: who knew, and what did they do with it. At Oldenburg the answer was a list of marks beside a name. At Hyde it was one doctor’s tally of cremation forms. At Grantham it was a laboratory result that took eighteen days to reach the police. At Chester it was a group of consultants who were told to apologize. Several institutions already had a rule for what to do with a suspicion. In these cases the rule was either not used or not believed.
• 1976: Harold Shipman is convicted of offenses involving a painkiller at Todmorden and reported to the General Medical Council; he joins a Hyde practice in 1977.
• 1983 to April 1989: Deaths at the Lainz hospital in Vienna; four aides are arrested in April 1989.
• Early 1991: Children collapse on Ward 4 at Grantham; four die. A laboratory result reaches the ward on April 12; the police are called on April 30.
• March 29, 1991: A Vienna jury convicts Waltraud Wagner of 15 murders; she is sentenced to life.
• May 28, 1993: Beverley Allitt receives 13 life sentences.
• February 11, 1994: The Clothier report on the Grantham case is laid before Parliament.
• March 1998: Efren Saldivar tells Glendale police of killings and is released without charge; on March 24 Dr. Linda Reynolds calls the Greater Manchester South coroner about Shipman’s cremation certificates.
• January 31, 2000: Shipman is convicted of 15 murders and forgery.
• January 2001: Saldivar is arrested and charged with six murders; he pleads guilty on March 12, 2002 and is sentenced on April 17, 2002.
• July 2002: The Shipman Inquiry’s First Report concludes he killed at least 215 patients.
• July 14, 2003: Second and Third Reports published, the Third on death certification and coroners.
• January 13, 2004: Shipman dies in custody at Wakefield.
• July 2004: Police look into missing drugs at Sonthofen; the nurse is arrested that month.
• January 27, 2005: The Final Report puts the toll at about 250.
• June 2005: A colleague catches Niels Högel at Delmenhorst.
• November 20, 2006: Stephan Letter is convicted at Kempten of the deaths of 28 patients.
• February 2007: The government publishes Learning from tragedy, keeping patients safe.
• August 7, 2008: Wagner and Leidolf are released on parole.
• February 26, 2015: Högel is convicted at Oldenburg of two murders and other offenses.
• September 16, 2016: Elizabeth Wettlaufer checks herself into a Toronto psychiatric hospital and confesses; she pleads guilty on June 1, 2017.
• August 2017: Kardio, the Lower Saxony police commission, reports on Högel.
• October 24, 2018: Lower Saxony amends its hospital law.
• June 6, 2019: Högel is convicted of 85 murders.
• July 31, 2019: Ontario’s long-term care inquiry reports with 91 recommendations.
• January 2022: Hospital pharmacists become mandatory in Lower Saxony.
• October 13, 2022: Högel’s former superiors are acquitted.
• August 2023: Lucy Letby is convicted at Manchester; a retrial verdict follows in July 2024.
• September 9, 2024: The statutory medical examiner system comes into force in England and Wales.
• September 15, 2026: The Thirlwall Inquiry reports with 14 recommendations.