Signs of a Psychopath - Season 4

The "Tourniquet Killer" terrorizes young girls across Houston, Texas. When advances in DNA finally lead to his arrest, this psychopath eagerly confesses to multiple murders. Weeks before his execution, he grants one interview reveling in the spotlight.

First responders arrive at a home in Ontario where a mother leads officers to the dead bodies of her two children. An investigation yields a twisted truth, this awful tragedy isn't an accident but a carefully crafted killing by a vengeful psychopath.

A longtime nurse confesses to helping end the lives of numerous elderly patients at multiple nursing homes. But as detectives soon discover, this is no angel of mercy. Behind her unsuspecting "aww shucks" persona lies a ruthless psychopath.

A failed actor returns home, ready to take out his rage on the weakest members of society. After killing four people, a chance encounter with police will lead to his downfall. The interrogation room becomes the stage for this killer's final performance.

Burlington police get a call that a man has killed his girlfriend. When they arrive, the man reveals that he has other victims.

When a woman dies in a brutal stabbing, police quickly locate the prime suspect. During interrogation, the suspect appears to have a psychotic episode, but detectives soon learn it's merely the ruse of a deranged psychopath.

A 17-year-old steals a gun and begins a horrifying road trip. He murders two gas station attendants in cold blood, laughing as he shoots his victims in the face. When officers catch up with him, a haunting portrait of a burgeoning psychopath emerges.

A blazing car accident turns out to be the result of a devious murder plot.

In the course of a few hours, an unhinged man snaps, unleashing a furious rampage that would leave three women dead in their homes; a statewide manhunt ensues, which yields a misogynistic psychopath hell-bent on revenge.

A young woman calls 911 because her boyfriend is missing and there is a pool of blood in their apartment; evidence leads investigators to the couple's roommate, a manipulative psychopath hell-bent on revenge, along with his loyal best friend.