A young woman is found dead on the floor of a Tijuana hotel room. An ID in a nearby purse reads "Atlantis Black." The police report states that the body does not seem to match the identification, yet the body is cremated and the case is considered closed. So begins Bonner's search for her sister, and the unraveling of the mysterious final months before her disappearance, alleged overdose, and death. With access to Atlantis's email and social media...