A respected chiropractor is bludgeoned to death in his home outside Philadelphia. Find out how investigators pieced together the killer's identity.

When police entered the Levering, Michigan home of Trent Mallory and his fianceé, Amber Smith, on March 6, 2014, they found the place was in disarray. Clothes, books, and food were thrown everywhere, ...

What happened to the Memphis businessman?

Detectives reveal the weather was vital in Trent Mallory’s case.

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Preview: It is quickly discovered that Carmela Knight died from blunt-force trauma before being badly burned in a house fire.

Investigators find a partially packed suitcase in Joey O'Boyle's home.

After Uloma Curry-Walker's frantic 911 call, firefighters on the scene recognize Lt. William Walker, a fellow firefighter.

Season 3 Preview: "Trader Trent's" following on Facebook Marketplace opened up a range of possibilities for detectives.

Alex Sowa, Jim Sowa's son, tearfully recalls finding his father's body.

Friends and family tearfully recall the night that led to Carmela Knight's death.

Preview: Carmela Knight, a "suburban hockey mom", was found dead after a house fire surrounded by drug paraphernalia. What happened?