“A criminal is more vulnerable in his history than his future”

“A criminal is more vulnerable in his history than his future” is David Canter’s principle for looking backward when investigating a series of crimes. In the account of the East Area Rapist, it explains why the earliest patterns—before the offender’s methods were fully established—could be more revealing than trying to predict where he would go next.

The Principle of Looking Back

Canter, described as a leading British crime psychologist, presents the idea in his book Criminal Shadows. Rather than concentrating on where an offender went after the latest crime, he argues for examining what happened before the first one. The distinction is temporal as well as investigative: before committing a crime, a person may not yet know that he will do so, and may therefore take fewer precautions. The earlier past can preserve traces that later experience teaches an offender to conceal.

The principle makes the history of a crime series more than a prelude. It directs attention to the formation of behavior and to evidence that acquires significance only when separate incidents are read together. In this account, “history” includes not only the offender’s actions but also the accumulating police reports, neighborhood observations, and public responses through which those actions become legible.

Reconstructing Neighborhood Surveillance

The East Area Rapist’s pattern, as described in the reports, extended beyond selecting individual victims: he appeared to study neighborhoods. He often moved through Sacramento’s canals and drainage ditches, and preferred single-story houses near greenbelts, commonly second from a corner. Before attacks, reports described prowling and illegal entries in nearby homes, with small, inexpensive, sometimes personal items going missing. Hang-up calls also rose sharply within a four- or five-block radius before an attack.

Taken together, these signs suggested reconnaissance rather than a single spontaneous approach. The account describes a method of selecting a neighborhood, identifying perhaps half a dozen possible victims, and possibly ranking them. That preparation gave the offender options on the night of an attack. Reading the earlier incidents as a sequence thus revealed a broader pattern: repeated observation of residents and their surroundings, not merely repeated attacks.

The layout of houses mattered to this reconstruction. The account notes that few of the targeted neighborhoods had two-story houses. A single-story home made it easier to assess what was happening inside from window to window, while a second floor could give a resident a better view of someone moving through yards or jumping fences. In a two-story house, the stairs also create limited routes between floors, potentially making a sleeping resident feel more easily cornered. These observations connect the offender’s apparent preferences to the practical conditions of surveillance and access without treating any one feature as a complete explanation.

What the Physical Record Could Recover

A bloodhound search at one crime scene offered a route back through the offender’s movements, while its limits remained explicit. Pita stopped about half a mile from her starting point near railroad tracks and a residential street; two other dogs, Betsey and Eli, also worked the scene. Their handlers agreed that the dogs’ behavior suggested prolonged prowling. The suspected route went into the victim’s backyard over the north-side fence, out across the southwest corner of the back fence, and south along the tracks, where the suspect likely entered a vehicle.

The handler Judy Robb cautioned that elapsed time and even small changes in wind velocity could alter scent pools. The route was therefore an interpretation of evidence, not an unqualified certainty. Other site details helped situate it: an open field and a school stood across the street, the neighboring house was vacant and posted for lease, and the dogs tracked the scent around a corner to a place where a vehicle may have been parked in front of a house with a pool under construction. The value of looking backward lay in assembling these particulars while keeping their uncertainties visible.

Reports also recorded what the offender did not do. Kathy and David had a three-year-old son, and they told investigators that the East Area Rapist never opened or approached the child’s bedroom door. Other victims with small children noticed the same pattern. How the offender learned about household routines and interior layouts remained a matter of speculation, but the recurring observation became part of the historical record investigators had to explain.

Public Knowledge and the Changing Record

The principle also illuminates how the crimes’ public history changed over time. At first, public awareness was minimal. After Jane Carson’s attack, rumors spread, but the Sheriff’s Department asked the local press not to publicize the crimes, hoping to keep the suspect on the east side. Detectives Richard Shelby, Carol Daly, and colleagues quietly pursued leads, checking with parole and probation officers, looking into people in a range of neighborhood occupations, leaving business cards, and following tips. Jane listened to recordings of two suspects’ voices while blindfolded and rejected both identifications.

With little official information, gossip filled the gap, including false stories about the crimes. The blackout did not stop anxiety; it left rumors without public correction. After the East Area Rapist attacked twice within twenty-four hours on October 18, concern intensified. On November 3, five hundred people attended a crime-prevention meeting at Del Dayo Elementary School, where Shelby and Daly tried to respond to heated questions. The following morning, The Sacramento Bee published Warren Holloway’s report identifying a man as a suspect in eight rapes, ending the press blackout.

By May 1977, fear had changed the ordinary use of homes and streets. Three hundred neighborhood men patrolled east Sacramento County in pickup trucks equipped with CB radios. Residents added wrought-iron bars, acrylic panels, deadbolts, and floodlights; meter readers repeatedly displayed identification as they entered yards. These measures mark a shift from limited awareness to organized vigilance, but the reports also describe a fortress mentality: neighbors who heard something suspicious could retreat indoors rather than call police. A scream might be dismissed as teenagers playing, a person jumping a fence as taking a shortcut, and a late-night gunshot as a firecracker or a car backfiring. The record therefore contains both traces of the offender’s preparation and traces of how fear, rumor, and hesitation shaped the community’s response. Canter’s maxim gives that accumulated history its investigative force: the past holds details that the offender and the people around him may not have recognized as clues at the time.