Covers a cold case in Florida involving a strangled woman and a surprise confession nearly a decade later exposing a sexual psychopath.

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Follows a disturbed brother confessing to a multi-generational family slaughter and an older cold case, revealing a narcissistic psychopath seeking to return to prison.

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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.

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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.

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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.

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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.

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A killer brutally murders an elderly couple, and detectives quickly focus on their 17-year-old grandson who lives with them. When they finally capture him, they uncover a charismatic young psychopath with a hunger for fast food and revenge.

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When a grandmother vanishes, her grandson spins a twisted narrative about her demise and the disturbing location of her body inside a freezer. It doesn't take long for detectives to uncover the killer responsible ... a parasitic psychopath.

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Some of the most dangerous killers in modern history exhibit common psychopathic traits.

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A mass suicide later proves to be a murder orchestrated by a psychopathic family annihilator.

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A psychopathic husband kills his young wife and leaves her decapitated head in a bathtub.

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When detectives find an elderly woman dead after someone stuffs her in her own closet, they know they are not dealing with a normal killer. Instead, they discover the culprit is a troubled teenager with a fantasy to rape and kill.

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When officers arrive at a suburban home regarding a felonious assault, they find a bloodied and lifeless woman in her minivan. Detectives later interview her estranged husband, revealing a rage-filled psychopath with a revenge fantasy inspired by a movie.

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After gunshots ring out in an apartment complex, a car crashes on a nearby freeway. The driver flees on foot, and police quickly discover a dead woman in the passenger seat.

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The Stuart Police Department receives a frantic 911 call from a woman reporting that her husband has vanished.

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Advancements in DNA technology lead detectives straight to a psychopathic sexual predator.

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Police charge a son and his wife with the murder of his father until a tip comes from a woman claiming her ex-husband and his friend admitted to the brutal killing. Detectives interview the new suspects and uncover a pair of cold-blooded psychopaths.

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