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Detectives and forensic experts recount the most extraordinary cold cases that were solved using the revolutionary technique of familial DNA testing.

A man uses a dating site to meet and murder a college student.

When a University of Utah athlete is found murdered on campus, investigators learn that she had reached out to the campus police for help multiple times before her death.

The deadly 2020 shooting at U.S. District Court Judge Esther Salas' home, which killed her son and critically injured her husband.

He was a wealthy executive and a doting dad who was in fear for his life. Then, he was shot dead. The case made headlines because of its unusual defense, with the accused arguing he was too obese to carry out the killing. Would the jury believe it?