Forensic Files

Deadly Knowledge (5x19)

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When 23-year-old college co-ed Tina Biggar goes missing, her boyfriend and family fear she has been murdered. A police investigation reveals details about her past that no one, not even her closest friends, suspected: She was a student by day and a $100-an-hour call-girl by night. Her many clients were all suspects in her disappearance, as was her boyfriend. But when her body is discovered, police obtain evidence that reveals that her killer was former client Kenneth Tranchida, as well as more details about her bizarre double-life and its tragic consequences.