Chicago is the central setting of the 2016 investigation into the Strangling Undertaker murders, a city mapped through crime scenes, police work, and the routes investigators hope will expose the killer. Its role is more than that of a backdrop: public locations make the murders visible, their spread complicates efforts to identify a geographic pattern, and the limits of surveillance and lawful access repeatedly constrain the search.

Crime scenes and public attention

The investigation’s early cases are associated with public places in Chicago. Monique Silva, a prostitute, is found in Humboldt Park, posed as if she were looking toward the water. Her body has been embalmed, and the medical examiner estimates that she had been dead for five to seven days before its discovery. According to her pimp, she had been missing for two weeks. She is the second victim to be found in this manner. The public setting and the arrangement of the bodies help turn the cases into a highly visible investigation and put pressure on the Chicago Police Department to find the killer.

The city’s visibility is literal at another scene. When a further victim is found at Ohio Street Beach, spectators gather behind the crime-scene tape, some taking photographs on their phones. News crews report from the beach as investigators arrive. The crowd and cameras make the site a public spectacle, sharply contrasting with Zoe Bentley’s assessment that the killer’s chosen places are likely to be quiet at night. She argues that such locations may be public yet empty during the hours he uses them, and that they lack security cameras. In her view, the way the bodies are posed may carry meaning, so the selected places could matter to the killer without serving as a bid for fame or a game with the police.

Mapping a dispersed investigation

At Chicago Police Department headquarters, Lieutenant Samuel Martinez introduces the task-force meeting room as the situation room for the Strangling Undertaker cases. Whiteboards hold photographs and timelines, while a large map of Chicago displays marked locations. The arrangement makes the city a working investigative tool: scenes and sightings can be compared spatially, even when they do not resolve into a simple pattern.

That difficulty becomes explicit when a map marks Ohio Street Beach and Brighton Park, where Krista Barker had worked the street on the last night she was seen. To Zoe, the distance between the marked points makes clear that the killer is not concentrating on one area of Chicago. The city’s spread therefore frustrates a narrow search based on a single neighborhood. When Martinez considers staking out likely areas, Zoe acknowledges how little the investigators can usefully look for: her tentative description of a strong, reasonably attractive man with a suitable car is too broad to distinguish a suspect from most men in the department. The geography identifies where to ask questions, but cannot by itself identify who is responsible.

The map also helps the investigators reason about the abduction of Lily Ramos. Tatum Gray locates the corner of Clark and Grand in River North, where the killer picked her up, and a segment of Huron Street to which he took her. He reasons that the killer must have taken her somewhere along the route between those points, or to a place near where he killed her. This turns the known journey into a search area and gives the investigators a practical basis for looking for traces of his movements.

The city as both opportunity and evidence

The killer’s imagined relationship with Chicago is briefly visible from his apartment balcony. After getting a cold beer from the refrigerator, he watches the city from above. The rent is not expensive, but he considers the view acceptable. Buildings block his view of Lake Michigan; at night, the lake is only a dark shape. Instead, he looks toward illuminated apartment windows and thinks that someone for him is somewhere in the city. The scene places his search for a victim among ordinary signs of city life, while the windows also emphasize that the people around him remain separate and unknown to him.

The investigation increasingly treats everyday city activity as a possible source of evidence. After Lily’s abduction, Zoe and Tatum visit clothing shops to seek security footage. Their work is uncertain: one store’s footage has already been destroyed, while another manager refuses to provide it without a search warrant. At a shop where the manager says the suspected man visits often, Tatum insists that investigators need to see the recording, and Zoe warns that he may return and select another woman. The encounter shows how a routine commercial setting might preserve a trace of the killer’s movements, but also how access to that trace can be limited.

That pressure to find usable evidence leads Zoe and Tatum to Sorenson’s Plumbing. They see the blue van that Zoe had previously noticed outside the business, but they have neither a warrant nor permission to be on the property. Tatum cautions Zoe to remain calm; the van is locked, and its dark rear windows prevent them from seeing inside. Zoe proposes going into the shop under the pretext of asking more questions because she has visited before. She recognizes that calling Martinez at that moment would likely end their independent inquiry. Their actions make the city’s ordinary workplaces part of the search, while exposing the tension between pursuing an urgent lead and respecting investigative limits.

A changing search across Chicago

As the case develops, Chicago is not simply the location of past crimes but the terrain on which investigators try to anticipate the next one. Zoe concludes that the killer may adapt after nearly being caught: he knows that leaving a victim’s phone was a major mistake, may kill a future victim faster, and may choose someone other than a prostitute because he knows the police are watching for street-based targets. Her reasoning shifts the task from predicting a fixed pattern of victims to examining earlier crimes for mistakes that can be traced back through the city.

By July 29, Zoe and Tatum’s inquiry has brought them to the home of Laura Summer, where they find the blue van they had seen at Sorenson’s Plumbing. Zoe has already called Martinez and described what they have learned in general terms. Although he is furious about the FBI personnel acting without authorization, he recognizes that removing the suspected serial killer from the streets is the immediate priority and sends police squads. Chicago’s streets, shops, workplaces, and homes thus become connected points in an investigation whose clues are scattered across the city. The setting’s significance lies in that combination: Chicago offers the killer places to approach vulnerable women and move unseen, but the same network of routes, cameras, witnesses, and police work can also make his movements legible.