This episode originally aired February 21, 2019. The woman was dead. The man had been shot four times but he survived. When the man's version of events was at variance with the evidence, investigators turned to forensic science, hoping to determine if this was a botched robbery, or cold-blooded murder.

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This episode originally aired February 18, 2019. A human skeleton was discovered in the North Carolina marshlands and, when investigators learned she'd been dead for 18 months, they knew it would be difficult to find out who she was, much less who killed her. A forensic anthropologist was able to determine the victim's race, age and height, but it would take an inventive computer consultant to give her a face and a name.

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This episode originally aired February 14, 2019. Eileen and Derrick Severs disappeared from their home in the small village of Hambleton in Great Britain, and police found evidence which suggested foul play.

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This episode originally aired February 11, 2019. When a Massachusetts man dropped dead of an apparent heart attack, no one thought foul play was a possibility until police looked into his girlfriend's odd behavior in the days before his death.

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This episode originally aired February 7, 2019. Emelita Villa came to Arlington, Texas from the Philippines as a shy, impoverished, 18-year-old mail order bride for Jack Reeves, a man almost 30 years her senior. Six and a half years later, Emelita disappeared.

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This episode originally aired February 4, 2019. A woman is found dead in a ravine near a jogging path. Crucial crime scene evidence had been washed away by severe thunderstorms. Then, almost 20 years later, two pieces of newly-discovered evidence brought the killer to justice.

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This episode originally aired January 31, 2019. A man accused of killing his estranged wife insisted she committed suicide. Investigators said it was murder. The evidence was interpreted differently by the defense and prosecution. It was up to the jury to decide.

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This episode originally aired January 28, 2019. In 1993, the Amtrak Railroad experienced the deadliest train crash in United States history when the Sunset Limited derailed while crossing Alabama's Bayou Canot bridge. Forty-seven passengers and crew were killed; scores more were injured. The clues to the cause of the crash lay etched in twisted steel and buried in the mud of the Bayou Canot.

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This episode originally aired January 24, 2019. Firefighters find an entire family dead inside their burned-out home, and at first glance, it appears to be a case of murder-suicide. But clues found at the scene soon lead investigators to believe otherwise. Forensic science, a time card, a drawing, and an audiotaped diary help prosecutors to build their case, and bring the killer to justice.

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