A chilling quadruple episode of 72 Hours: True Crime plunges into the heart of unsolved mysteries. From a decades-old serial murder investigation in 1970s Ontario, Canada, to shocking crimes in Houston, Texas, and a string of disturbingly similar sexual assaults, this series unravels gripping real-life cases. Witness the tireless efforts of detectives pursuing vital evidence, bringing you closer to the truth in this heart-stopping exploration of cold cases and the pursuit of justice. Subscribe now for more! youtube.com/c/RealCrime