Chicago Police Department

The Chicago Police Department is the local agency organizing the investigation into the Chicago Strangling Undertaker serial murders. Its headquarters becomes the operational center for the case: detectives and Lieutenant Martinez gather evidence, coordinate with federal agents, and deploy officers as new leads emerge. The department’s work is presented as both methodical and pressured, with investigative progress repeatedly shadowed by incomplete information, public attention, and the consequences of arriving too late.

Headquarters and investigative structure

The department’s Central Investigation Division is housed at its busy headquarters. When Tatum Gray arrives, Lieutenant Martinez leads him through the building to a meeting room being used as the task force’s situation room. The space’s large white table, wall-mounted boards covered with images and timelines, and Chicago map marked in two places make the investigation’s developing structure visible: people, evidence, and geography are being assembled in one shared workspace.

The room contains five detectives and Ruben Bernstein, an experienced profiler who joined the task force three days after the second body was found. Martinez describes Bernstein as already having helped considerably. The arrangement places the profiler alongside police investigators rather than apart from the case, while the presence of Tatum Gray shows that the work also involves federal participation. The task force is thus depicted through its concrete working relationships, not through a detailed formal chart: Martinez directs the meeting, detectives contribute to the local inquiry, and outside expertise is brought into the room.

The investigation also has a public identity beyond police headquarters. A newspaper reporter coined the name “The Strangling Undertaker,” and Martinez tells Tatum that it caught on within days. Later, news coverage identifies FBI involvement and circulates an image of Zoe Bentley and Tatum with Martinez at a crime scene. The same coverage presents an unconfirmed profile of the killer as a white man working in a funeral home. The department’s investigation therefore unfolds alongside a media narrative that can make a tentative description sound settled. The evidence establishes the reporting and its claims, but not that the department officially endorsed them.

Records, patterns, and investigative leads

The department’s inquiry draws on records beyond the immediate crime scenes. In July 2016, Martinez brings Zoe a set of reports from the Chicago Department of Animal Care and Control, covering July 2014 through March 2016. There are twenty-seven cases, all from West Pullman; the first six are classified as taxidermy. The reports offer a geographically concentrated pattern for investigators to examine, but the available evidence does not establish that every case was criminal or that the records alone identify a suspect. Their importance lies in how police can use an administrative record series to test a connection suggested by the murders.

The department also assembles information about missing women. Mel Parks says that he and the lieutenant from vice contacted all the districts and created a list of reports from the previous seventy-two hours. The four-page document contains twenty-nine names, with phone numbers and addresses for the women and their acquaintances, descriptions, and brief accounts of the circumstances of each disappearance. Seven entries have been crossed out and one is circled. The list makes the scale and practical burden of follow-up tangible: each name must be checked against other information, and the pages are a working instrument rather than a finished conclusion.

Behavioral interpretation is another part of the casework. In discussing the victims, Tatum distinguishes the art student attacked at home from the two later victims, who were prostitutes. He reasons that the latter were probably persuaded to accompany the killer to a safer place, rather than attacked in a public street or alley; their having been restrained while still alive makes that alternative seem difficult to reconcile with the setting. This is an investigative hypothesis, not a confirmed reconstruction, but it shows how the task force uses differences between cases to consider the offender’s approach and the likely place of an attack.

Field operations and their limits

When a fresh murder is reported, Martinez assigns immediate responsibilities. He goes to the scene with Mel and invites Tatum and Zoe to accompany them; Scott is ordered to remain in the situation room and speak with dispatch, while other personnel are to follow in separate vehicles. Martinez seeks the captain’s approval to keep roadblocks and a helicopter in operation for another half hour. He explains that a fresh scene means fresh leads and anticipates that investigators may divide up after reviewing it. The response combines scene examination, communications, and a short extension of area-wide resources.

That urgency is set against the human cost of the delay. The team had spoken with the victim by phone only hours earlier and had been closing in on her location. Zoe recognizes that the new scene will yield more information, but that prospect cannot undo the fact that the woman was alive during the earlier contact. The episode presents an investigative gain and a failure of rescue at the same time: fresh evidence may help the case, yet it arrives after the opportunity to save the victim has passed.

The department’s work also encounters procedural boundaries. At Sorenson’s Plumbing, Tatum points out that the investigators have neither a warrant nor permission to be there and asks Zoe to remain calm. They find the van locked and cannot see through its darkened rear windows. Zoe proposes entering the shop on the pretext of asking further questions, since she has been there before; Tatum is unhappy with the plan, but they proceed inside. Elsewhere, Tatum insists that a business provide security footage. Together, these moments show investigators seeking access to potentially useful evidence while confronting the distinction between suspicion and authorized access. The scenes establish pressure and uncertainty, not a general account of departmental policy or the legal outcome of any search.

Institutional significance

The Chicago Police Department’s role is defined by coordination: it brings detectives, a profiler, federal agents, district reports, animal-control records, and field resources into a single investigation. Its methods range from comparing victim circumstances and canvassing recent missing-person reports to maintaining roadblocks and pursuing records that may reveal a pattern. The situation room’s map and timelines give this work a visible center, while assignments from Martinez translate analysis into action.

The story does not portray the accumulation of information as a guarantee of success. Some leads remain hypotheses; the press circulates a suspect profile before it is confirmed; and the team’s rapid response cannot reverse a victim’s death. The department is therefore significant not simply as a backdrop for the case, but as the institution where evidence must be gathered, interpreted, and acted upon under time pressure. Its investigation is shaped by the tension between the need to move quickly and the need to establish what the available facts actually support.