Ep 4. Sunday

In Those Who Kill season 1 episode 4 titled "Sunday," the investigation into a string of murders involving young boys takes a new turn as detective Catherine Jensen and profiler Thomas Schaeffer delve deeper into the killer's psyche.

As the episode begins, Catherine and Thomas are called to a crime scene where the body of a young boy has been discovered. The victim is the fourth in a series of murders that have rocked the city, and the pressure is mounting on the detectives to find the perpetrator.

With little evidence to go on, Catherine and Thomas begin to piece together a profile of the killer. They discover that all of the victims were taken from their homes on Sunday mornings, and that each one had a connection to a local church. The killer, it seems, is targeting young boys who have a strong faith and sense of morality.

As the detectives delve deeper into the killer's motivations, they begin to suspect that he may be hiding in plain sight. They visit the church attended by several of the victims and interview the priest, who tells them that a man named Carl was a regular attendee until he stopped coming a few weeks ago.

With a possible suspect in mind, Catherine and Thomas begin to dig into Carl's past. They discover that he has a history of mental illness and that he was abused as a child. As they try to track him down, they fear that he may be planning another attack.

Meanwhile, Catherine is struggling with her own demons. She is haunted by the memory of her own mother, who was murdered when Catherine was a child. As the case becomes more personal for her, she begins to push away her boyfriend, who is also a detective, and focus solely on the investigation.

In the end, Catherine and Thomas track Carl to a remote cabin in the woods. They arrive just in time to stop him from killing another boy. As they apprehend him, they discover that he had been planning the murders for years, and that he believed he was doing God's work.

Overall, "Sunday" is a tense and gripping episode that delves into the mind of a serial killer. The investigation is methodical and realistic, and the character development of Catherine and Thomas adds depth to the story. With strong performances from the cast and a compelling plot, this episode will keep viewers on the edge of their seats.