Killer Unknown

3:00 AM to 4:00 AM

Monday 15 September

Closing In

Season 1 Episode 4 of 6

Detective Mike Huff narrows his focus to a young man who was Dena Dean's boyfriend in 1998, and the last people she had contact with the day of her disappearance

Killer Unknown airs on Investigation Discovery at 3:00 AM, Monday 15 September. (Subtitles.)

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