The killer’s escalating urge to kill and fantasies

The killer’s escalating urge to kill and fantasies are presented as a cycle: an imagined scene grows more demanding, an attempt to enact it falls short, and the killer learns from the failure before seeking another victim. The killings are therefore not depicted as isolated acts with an unchanging signature. Their growing frequency and changing methods reveal a compulsion that presses toward fulfillment while repeatedly adapting to what has gone wrong.

Fantasy as an engine

Zoe Bentley finds a framework for understanding serial murder in a book by FBI profiler Robert K. Ressler, one of five books on serial killers she has borrowed and the first written by a profiler. Ressler’s account explains that a fantasy can become more powerful and detailed until it occupies the killer’s thoughts and drives him to act. An enactment may provide temporary satisfaction, but the need eventually returns. This is not simply a label Zoe applies after the fact: it gives her a way to connect the killer’s preparation, the changing evidence between crimes, and the urgency of the next likely attack.

The distinction between killing and what follows it becomes central to her reading. At a later crime scene, Zoe reasons that the killer’s plan has failed because the body has not been posed and may not have been embalmed. In her analysis, the death itself is not the point; the period after it is what the killer fantasizes about. When that planned aftermath is denied, the underlying need remains, possibly intensified. The scene thus frames an incomplete enactment not as an ending to the compulsion but as a source of pressure for its return.

Practice and escalation

The pattern appears first in the animal reports Zoe studies. The records are scattered in 2014; in 2015, they show one or two pets in many months, with occasional gaps. Then, in March 2016, five embalmed cats and dogs are found in West Pullman. Zoe reads that cluster as a change in the pattern: the killer has become reckless and desperate, driven by a growing need and anxious to attempt the act against a person. The pets are not incidental details in her reconstruction. Their repeated appearance, followed by the sudden March concentration, makes them evidence of practice and mounting compulsion.

The transition to human victims follows a chronology Zoe uses to estimate how quickly the danger is increasing. Susan Warner was killed around April 5, about a week after the last reported embalmed pet. Monique Silva was murdered around the beginning of July, and Krista Barker on July 10 or 11. Zoe cannot establish a reliable overall rate from so few cases, but the interval of just nine days between the last two murders suggests to her that the pace may be accelerating. Her warning that another attack could come soon rests on that concrete interval, while her uncertainty about the sparse data keeps the prediction a reasoned assessment rather than a certainty.

The first human case also supplies a model against which later attempts can be measured. Zoe reasons that Susan, an art student attacked in her home, was probably known to the killer; he remained there to embalm her. Her body’s disposal, however, indicates failure in the intended presentation. The clothing tore as he tried to dress her, the limbs were too rigid to reposition, and the result did not look lifelike. Zoe interprets the nearly three-month gap after Susan’s body was found on April 12 as a period of learning: the killer experimented with ways to preserve flexibility after embalming and learned how to sew a mouth shut. In this reading, the interval is not inactivity but rehearsal and technical adjustment.

Refinement of the script

The later victims suggest that the killer changes his approach to make the imagined aftermath possible. Zoe distinguishes the first victim, attacked in her home, from the next two, who were prostitutes and whom she believes he probably paid to accompany him to a safer place. Tatum Gray argues that the women were still alive when bound, making it difficult to imagine that they were restrained in a street or alley. Their differing circumstances matter to the analysis: the killer is not simply repeating one method of approach, but arranging access and control in ways that suit his plan.

Clothing becomes another part of that preparation. Zoe notes that Krista Barker was much taller than Monique Silva and that Lily Ramos did not share their build; the clothes involved were not inexpensive, one-size garments. Susan’s wardrobe had been available because the killer attacked her at home, but the other women had only the clothes they were wearing. Zoe and Tatum therefore infer that the killer took them shopping before the murders, presenting the purchases as part of a client’s plans for an evening. In their reconstruction, the apparent ordinary errand helps him obtain clothes suited to the presentation he wants later.

A separate preparation scene echoes the earlier case involving Susan. The killer has not embalmed a child before and recognizes that the task may go wrong, so he considers having a second child as a backup. He prepares to work in a bathroom, as he did with Susan, using a folding table, embalming fluid, and an embalming machine. He also brings toys bought the previous day, described in his thoughts as a sentimental gesture for the child he imagines having afterward. The practical equipment and the toys sit uneasily together: preparation for the procedure is methodical, while the imagined relationship that gives the gesture meaning belongs to a private fantasy. The comparison to Susan makes the recurrence explicit even as the intended victim changes.

Failure and adaptation

Zoe understands the killer’s development as a learning curve. He begins with a fantasy, attempts to fulfill it, finds that the outcome does not match what he imagined, and modifies his actions for the next attempt. As he repeats that cycle, the techniques become more refined. The result is a crucial distinction between a recurring desire and a fixed signature: the underlying fantasy persists, but the visible method can change to accommodate it. For investigators, this means that variation between crimes does not necessarily disprove a connection; it may record the killer’s effort to improve.

After a later attempt goes wrong, Zoe predicts specific changes. The killer has left a victim’s phone behind, creating a traceable mistake, and she believes he will avoid repeating it by killing more quickly and leaving less opportunity for contact with others. She also expects him to change his target because investigators believe he is selecting prostitutes. In her view, he will look for someone still vulnerable but outside that assumed category. These are Zoe’s deductions about his likely next decisions, not confirmed statements by the killer, but they follow from the pattern of a perpetrator who studies each failure and adjusts the next approach.

That expectation changes the investigative emphasis. If the killer adapts, future victims may no longer reveal the pattern in the same way as earlier ones. Zoe tells Lieutenant Martinez that the police will need to trace the mistakes left in past crimes instead of relying on what future victims have in common. The developing fantasy therefore has consequences beyond the killer’s private life: each refinement can conceal the old pattern more effectively, while each earlier error offers investigators a remaining point of entry.

Narrative significance

The account makes escalation legible through evidence accumulated over time: pet reports, the long pause after Susan Warner, the shorter interval between Monique Silva and Krista Barker, and the practical changes Zoe infers from the victims’ circumstances. Her analysis repeatedly distinguishes observed facts from uncertain conclusions. She can identify the nine-day interval, for example, but cannot prove from limited data that every murder is accelerating. That restraint makes the growing urgency more persuasive: the danger arises not from certainty about the next date, but from a sequence whose pace may be tightening.

The cycle also complicates the idea of a serial killer’s signature. What repeats is not necessarily a stable set of outward details; it is the movement from fantasy to attempted enactment, from disappointment to adjustment, and from adjustment to another attempt. The killer’s methods evolve because the fantasy remains unsatisfied. For Zoe, recognizing that relation turns apparent inconsistencies into clues and makes the interval between crimes part of the evidence. The compulsion is both repetitive and adaptive: it returns, but never quite in the same form.