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A man believes he's carried out the perfect murder, but he forgets one tiny detail. How did science trap the man who thought he'd got away with it.

When two bodies turn up in a car crash, investigators uncover the grizzly truth about a seemingly perfect relationship.

In 1999, a killer brutally murders Dennis Dolinger in the basement of his home. With DNA technology, the race is on to find the culprit before they strike again.

In 1978, a shocking murder terrifies a small Illinois town. It goes unsolved for years, until investigators lay a cunning trap to catch the killer.

Part 2. Death row inmate John Hummel agrees to a final interview weeks before his execution.

While being questioned on the abduction of a barista, a local businessman makes a deal with police to reveal a secret life as a serial killer.

When a 50-year-old woman is found dead in her home, all that's left behind is a note that reads, 'Chase me.' Police search relentlessly for the remorseless psychopath.

Three locals are found brutally murdered in a quaint village in Maine. The killer leads detectives into the woods, where he buried his fourth victim.

A young mother is found brutally murdered in her home in New York. Snowy footprints lead into the home but with no exit trail, how did the killer escape.

When police discover Betty Sue Short murdered in her home, they notice disturbing similarities with another recent killing in the community of Kingsport, Tennessee.

When Sue Hughes falls for Ste, she sends him £100,000 for his cancer treatment. Sue's life falls apart when she discovers that everything is a lie.

He Almost Got Away With It. Timothy Bass got away with murder for decades, telling his wife, Gina, he was working the night shift. She believed him until she uncovered his secret.

He Said There Were More Of Them. Shirley Gaskins was unaware her father was one of America's most prolific serial killers. But the more people vanished, the harder it was to deny.

Firefighters discover a body with two gunshot wounds. The fire destroys any hope for evidence, so police look to the victim's social media for clues.

A decorated marine faces war at home when he falls for a married woman. Suspicion and jealousy plague their affair and it destroys their families and their lives.

I Didn't Know It Was Blood. Christina Hildreth unwittingly helped Shawn Grate clean up the scene of his first murder. At the time, she didn't realise the kind of man he truly was.

Part 2. Death row inmate John Hummel agrees to a final interview weeks before his execution.

For years, a serial killer stalks unsuspecting elderly victims. However, when one woman survives, she helps break the case wide open.

A teenager who isn't allowed to date falls in love with a senior at school. They go to extreme lengths to be together and it ends in disaster.

Dr. Mark Wangler and his wife Kathy appear to live the middle-class dream. But their façade collapses as a pre-meditated execution rips their family apart.

In 2002, a series of mysterious events shatter a family. It takes ten years for the baffled police to discover what happened on that fateful night.

A runway model turned mom-a-ger lived a fairytale life of luxury. When she turns up dead at the bottom of her pool, police uncover deep motives.

A young actress gets her big break in a hit movie. After her brutal murder, police sift through hours of surveillance to catch her killer in the act.

Man Who Got Away With Murder. Ian Stewart killed his wife. Years later, he killed his millionairess fiancée. The Watcher, The Listener and The Profiler spot the signs of guilt.

A Mississippi husband who uses a wheelchair turns violent when his loving wife tries to end their marriage. Was it self-defence - or murder.