Samuel Martinez

Samuel Martinez is a lieutenant with the Chicago Police Department and a central coordinating presence in the investigation of the Strangling Undertaker murders. He brings Tatum Gray into the task force’s work, oversees the movement of information between its members, and responds to the later discovery of a lead with a clear priority: getting the serial killer off the street. His role is defined less by personal theories than by the decisions that keep a sprawling investigation moving—and by the costs he is willing to defer when immediate danger takes precedence.

Identity and Introduction

Martinez first appears through Tatum’s attention to his appearance. Tatum notices his thick, well-groomed mustache and thick-rimmed glasses, which lend his face an air of authority; he privately doubts that the same style would suit him. The scene establishes a contrast between Tatum’s irreverent observations and Martinez’s composed manner. Martinez’s speech is clipped and measured, yet carries easily through the busy entrance of the Chicago Police Department headquarters.

He welcomes Tatum and leads him upstairs to the Central Investigation Division’s meeting room. The space is already arranged around the case: a large table, whiteboards covered with images and timelines, and a map of Chicago marked in red. Martinez identifies it as the situation room for the Strangling Undertaker cases. The nickname, he explains, began with a newspaper reporter a few days earlier and had caught on. His introduction therefore also places him at the intersection of police work and public attention: the department is investigating the murders while the press is already giving the killer a name.

Coordinating the Investigation

Martinez presents the case as both bleak and active. The bodies have appeared in public places, where families with children have seen them, and people are frightened. At the same time, he emphasizes that Dr. Bernstein, who joined the task force three days after the second body was found, has significantly narrowed the suspect pool. Martinez does not minimize the effect of the murders, but he communicates that the investigation has begun to make progress. That balance—acknowledging public alarm while keeping attention on what investigators can do—recurs in his handling of the case.

The task force’s working picture changes as new evidence arrives. When Tatum and Zoe Bentley attend the scene at Ohio Street Beach, Martinez identifies himself to an officer at the perimeter and confirms that the two investigators are with him. Spectators have gathered close to the crime-scene tape, some taking photographs, while news crews are reporting nearby. Martinez’s brief action establishes their access and keeps the group moving into the investigation despite the crowd and press presence.

Later, the meeting-room map and timeline have been updated around Krista Barker’s murder. A red circle marks Ohio Street Beach, while a red X marks the Brighton Park neighborhood where Krista worked the street on the last night she was seen. The marks make clear that the killer is not concentrating on one Chicago neighborhood. Martinez listens as Zoe proposes narrowing the suspect pool and agrees to hear the case. His role here is not to claim her conclusion as his own, but to make space for the reasoning to be examined alongside the task force’s shared record.

Field Inquiries and New Leads

Martinez also connects the analytical work to searches outside the meeting room. On Huron Street, he describes a door-to-door investigation of the stretch where Lily Ramos is believed to have been held. The relevant section is 1.1 miles long; Dana and three additional patrol officers are conducting the search. So far, no one has reported anything pertinent, and officers plan to revisit homes where no one answered. Martinez then turns the discussion back to the profile, linking the practical search to the task force’s effort to identify what kind of place or person investigators should be looking for.

When information comes in from the cab driver who took Zoe to Saganashkee Slough, Martinez relays the sequence carefully. Zoe asked to be taken to the shore, indicated where the driver should stop, and said she would return in half an hour. A few minutes later, a man got out of a car farther along. The driver’s description of him is vague; he had tried not to look closely because he assumed Zoe was meeting someone for a romantic encounter. Martinez conveys both what the account establishes and what limits it. The encounter is a lead, but it has not yet produced a reliable identification.

Authority, Accountability, and Crisis

Martinez’s authority becomes explicit when he tells Tatum that he and Dr. Bentley are no longer part of the case. He intends to return the next day to question Zoe more thoroughly, but he acts immediately to remove the two investigators from the investigation they have begun conducting on their own. He explains that Dr. Bentley endangered herself and that Tatum’s earlier failure to share all the information contributed to the situation. The decision is not simply a rebuke: Martinez identifies a breach in the investigation’s coordination and asserts control over who will proceed with the case.

That control does not make him inflexible about priorities. When Zoe calls with information connected to Jeffrey Alston and Laura Summer’s home, Martinez sounds livid, but remains professional. He recognizes that the immediate priority is taking the serial killer off the street and sends police squads toward the house. He postpones dealing with the rogue FBI personnel until the danger has been addressed. In this response, his anger and his operational judgment coexist: he does not excuse the conduct, but neither does he allow the dispute to displace the urgent threat.

Narrative Role

Martinez gives the investigation an institutional and procedural shape. He welcomes expertise, maintains a shared view of the evidence through maps and timelines, coordinates field searches, reports uncertain leads with their limitations intact, and intervenes when investigators’ actions create new risks. The case repeatedly tests the balance between open inquiry and command: Zoe’s ideas need to be heard, but her unauthorized actions and Tatum’s withholding of information have consequences. Martinez’s decisions make that tension concrete. His defining significance is not that he solves every uncertainty himself, but that he must keep the investigation accountable while the danger continues to demand speed.