Signs of a Psychopath - Season 11

Detectives find a woman partially clothed and strangled to death in a wooded ditch in Florida. With no leads or suspects, her case goes cold. Then, a surprise confession almost ten years later exposes a deviant sexual psychopath with a murderous fantasy.

When a disturbed brother slaughters three generations of a family, he quickly confesses and continues by confessing to a 10-year-old cold case. Detectives uncover a narcissistic psychopath with parasitic tendencies whose one goal is to return to prison.

When a 15-year-old Florida girl runs away with her troubled boyfriend, someone brutally murders a 66-year-old disabled man miles away in his home. Upon their apprehension, police discover the young couple are, in fact, thrill-seeking murderers.

After a mother of three mysteriously vanishes following a night out on the town, investigators uncover a sexual psychopath's nightmarish desires. Several days later, they discover her body in her own septic tank, revealing how callous the murderer is.

In the morning hours of Christmas Eve, motorists are horrified when they discover two bodies along the shoulder of I-85. When detectives catch the killer, they uncover a militant psychopath with a penchant for guns and violent rescue-mission fantasies.

When a young woman vanishes, it doesn't take long for detectives to zero in on her estranged husband. When questioned, he appears eerily calm and casual, but what they soon reveal is an impulsive and rage-driven psychopath who cannot tolerate rejection.