As detectives reconstruct a single mom's final 24 hours, their suspicions turn to her fiancé, a creepy co-worker, and a violent ex-boyfriend. Ultimately, investigators discover a disturbing pattern of attacks -- and a predator with the master key. [also shown as S6:E23]
Genres: Crime , Documentary
Keywords: homicide-investigation , interrogation , interview , murder-investigation , murder-suspect , suspicion-of-murder , timeline , true-crime