Steven Koecher’s family still stares at his face in holiday albums—he vanished in December 2009, aged 30. The devout Latter-day Saint parked his car in a Nevada retirement community (two hours from his Utah home), walked off camera, and disappeared. His undamaged car held a blanket, pillow, molding food, and wrapped Christmas gifts for nieces/nephews—signs he planned to return. Now, a new *Somebody Knows Something* episode, hosted by kidnapping survivor/ex-cop Kara Robinson Chamberlain, digs into his case with his siblings. Have you ever fixated on an unsolved disappearance? What’s the most puzzling detail that haunts you?