Girls night out in Los Angeles. 24-year-old Christy Giles and 26-year-old Hilda Marcela Cabrales-Arzola head to a warehouse party in East L.A., where they meet David Pearce. Witnesses say Pearce offered them cocaine, and the group heads back to Pearce’s apartment. The next day, both women are dropped off at separate hospitals suffering from a drug overdose. As the families of both women deal with the devastating news, Christy’s husband, Jan notices her phone pinged to an unknown location. We speak to Jan and Christy’s parents about how the tragic day played out, as well as Hilda’s family, who were with her in hospital while she was in a coma. Plus, a renowned expert on drug-facilitated assault cases discusses the initial facts of the investigation.