Susan Cox Powell disappeared 15 years ago. The day after she turned up missing, her four-year-old son Charlie Powell spoke to a detective from the West Valley City, Utah police department. Charlie told the detective his mommy had joined him, his little brother Braden and their dad, Susan’s husband Josh Powell, on a camping trip. But Charlie also said Susan didn’t come home. She stayed “where the crystals are.” In this special bonus episode, we explore what Charlie was trying to tell us about Susan’s fate. We also speak with forensic interview specialist Brianna Martinez about how the approach to interviewing kids has changed over the last 15 years. For years, investigative reporter Dave Cawley has been studying thousands of police documents, journals, videos and diary entries. He tracked down new sources, followed new leads and traced Josh Powell's trail from West Valley City, Utah, through Idaho, Oregon, Nevada and on to Washington State, where Powell killed himself and his two sons. Cold is the most complete retelling of the Susan Powell story ever. Join Dave Cawley in his search for truth.