Police receive a frantic 911 call about a woman who witnessed a murder. But during her interrogation detectives begin to wonder—was she a terrified witness or was she a killer?

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.

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.

Legal scholar Dan Markel was gunned down execution style as he pulled into the driveway of his Florida home. Detectives hunted for a killer-who would hire a hitman to murder a law professor?

After trying for 20 years to solve the mystery of a six-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.

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?

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

Shortly after midnight on Valentine's Day, police found Amie Harwick, a prominent sex therapist and Drew Carey's former fiancé, dying on the patio under the balcony of her Hollywood Hills apartment. Detectives began to investigate-did she fall, or was she murdered?