This week we look at the case of Mary Vincent.

Mary Vincent was a 15-year-old runaway heading to visit her grandfather in California when she accepted a ride from a man named Lawrence Singleton in September of 1978.

Lawrence Singleton seemed like a genuine, friendly man at first but things took a horrific turn and Lawrence Singleton's true colours would quickly show.

Lawrence Singleton assaulted her, raped her multiple times, and then cut her arms off before dumping her into the Del Puerto Canyon.

Resources Available Here.