On December 13, 2009, 30-year-old Steven Koecher parked his car in a cul-de-sac in a town called Henderson, Nevada—200 miles from home. A surveillance camera captured him sitting in the car for 6 minutes before getting out and walking away. He was never seen again. In the weeks that followed, his family poured over his online activity and discovered that Steven had been keeping secrets. So how did he end up in that neighborhood? What was he doing there? And Where. The Hell. Is Steven?