Thirty-two years after the killing of University of Michigan law student Jane Mixer, police use DNA found on her pantyhose to finally track down the killer, in this clip from Season 5, Episode 15.

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"Cold Case Files" chronicles the journeys of the detectives who reopen cold cases. The detectives uncover new twists and startling revelations using breakthroughs in forensic technology and the influence of social media to help crack the cases—bringing long-awaited closure to the victim's families and friends.

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