Border patrol agents discovered the bodies of a young mother and her toddler son along the Rio Grande. Detectives closed in on a surprising suspect.

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Legal scholar Dan Markel is gunned down execution style as he pull into the driveway of his Florida home. Detectives hunt for a killer, asking themselves who would hire a hitman to murder a law professor.

A man is gunned down on a Louisville sidewalk during Derby week. A few weeks later, the bodies of two teenage boys are found burned and abandoned in a vacant lot. Detectives investigate a strange connection between the murders.

When Ilene Gowan, a popular waitress at a local bar in Council Bluffs, Iowa, was found dead by the side of the road, her family called in famous forensic examiner Dr. Michael Baden to help solve the case.

Police receive a frantic 911 call about a woman who witnessed a murder; during her interrogation, detectives they wonder if she is a terrified witness or a killer.

The murder trial of prominent lawyer Tex McIver transfixed Atlanta. McIver claimed his gun accidentally went off, unintentionally shooting his wife in the back as they drove home. But, did McIver have a secret motive to want his wife dead?

After trying for 20 years to solve the mystery of a 6-year-old boy found dead in the woods, an artist's age progression portrait of the child posted on social media leads detectives to find new clues.