Most of what an archive like this one contains was reconstructed after the fact, from bodies, from forensic work, from a confession given once the case was already made. A small number of cases were closed by somebody who was in the room and came out of it. Five of them are here, and read together they say something more specific than that a witness is useful.
In all five the killing had been going on for months or years, an investigation existed or should have, and it had not reached the man. Then one person got away and the case ended within weeks. What that person supplied was not a description. It was a name, or an address, or a vehicle. Something that could be gone to.
Sergei Ryakhovsky killed across the woods and dacha settlements around Balashikha and Podolsk between 1988 and 1993. Nineteen murders were charged and eighteen proven, the victims aged from fourteen to seventy-eight. Six people survived attacks by him. In January 1993 one of them, a woman with a photographic memory, sat with investigators and described him closely enough to produce a reliable composite portrait. Officers carried it onto the suburban trains and buses and into the woods, and the search closed on him. He was arrested on April 13, 1993, three months later, after five years of killing.
Larry Bright killed eight women in Peoria County, Illinois, between July 2003 and late 2004, burning several bodies in a fire pit behind the house he shared with his mother. All eight were Black, all were using drugs, most were working as prostitutes. Women in Peoria had been telling police for months that women were disappearing. The local reporting afterwards recorded that the department was slow to accept there was a series at all. He was arrested in January 2005 after a woman who had escaped from him gave a description and a vehicle.
Olaf Däter, a geriatric nurse in Bremerhaven, killed five of the elderly women he had nursed between June 5 and 14, 2001. They let him in because they knew him. Doctors examining the first four missed the internal injuries and certified the deaths as natural, which is why five women could die in ten days in one town with nobody looking for a killer. He attacked a sixth woman and she survived. She gave the police his name.
Reinaldo Rivera raped and killed four young women across the Georgia and South Carolina line between July 1999 and September 2000, approaching them with a story about being a photographer or opening a modelling agency. In October 2000 Chrisilee Barton went with him to her house, where he raped her and stabbed her three times in the neck with a steak knife. She survived and she helped police find him. They took him from a motel room where he had cut his wrists. Two of the four bodies were recovered afterwards on the strength of what he then told them.
Jeffrey Mailhot strangled three women in his flat at 221 Cato Street in Woonsocket, Rhode Island, between March 2003 and July 2004, and cut up the bodies in his bathtub. Only one victim was ever recovered. He is the clearest case of the five because the police who came for him were not investigating a murder. Two women he had attacked the same way had survived and complained, and on July 16, 2004 he came home from work to find officers with a warrant for assault with a dangerous weapon, the weapon being his hands. Their two accounts were almost identical: a drink, a chokehold, and then being released and told to leave.
The obvious reading is that these five were seen and therefore caught, and it is not quite right. Being seen is common. What separates these cases is that the survivor could point at something findable.
Däter's sixth victim gave a name because he had nursed her. Mailhot's two survivors had been inside his flat. Bright's gave a vehicle. Ryakhovsky's produced a face good enough to search a specific district with. Rivera's led officers to the man himself. In each case the person who got out was not a stranger who had glimpsed a stranger. She could say where he was.
The Zodiac Killer attacked seven people in Northern California across ten months in 1968 and 1969, and two of them lived. Michael Mageau survived five bullets at Blue Rock Springs and gave a description. Bryan Hartnell was tied and stabbed at Lake Berryessa and lived. Three teenagers watched the killing of the taxi driver Paul Stine from a window across the street and called police while it was happening.
That is more surviving eyewitness evidence than any of the five cases above produced, and it has identified nobody in fifty-seven years. Arthur Leigh Allen, the best known suspect, was picked out from a photograph by Mageau in 1991, and his handwriting did not match the letters and the partial DNA from the envelopes did not match him either. The case is open with the FBI and with three separate California jurisdictions.
The difference is not the quality of the witnesses. It is that Zodiac was a stranger to the people he attacked and to the places he attacked them in, and a description of a stranger is not an address. Five bullets survived at close range bought a face and no way to look for it.
There is an uncomfortable pattern in who these survivors were. Bright's victims were poor, addicted and Black in a city of a hundred thousand, and the case is now cited in Illinois as an example of what happens when the missing fit that description. Mailhot's were women working on Arnold Street, around the corner from his flat. Around a dozen more are reported to have escaped him. Däter's were elderly women whose deaths a doctor had already explained.
In each of those three the machinery that is supposed to notice a series had eight, three and five deaths to work with and did not close on anybody. What closed on him was a woman who had been assaulted and went and said so. That is not a story about good witnesses. It is a story about which deaths get investigated and which do not, and about who was left to do the work instead.