On December 29, 2013, Donnie Erwin drove off from his home in Camden County, Missouri. It was the last time the 59-year-old Army veteran was seen alive. His fate became a mystery that persisted for the next decade — and ended last month, when police announced they had recovered Erwin’s vehicle and remains from the bottom of a pond within miles of his home. James Hinkle, a freelance videographer and operator of the Echo Divers YouTube channel, located Erwin’s car. Hinkle takes us behind the scenes of his search; and Erwin’s sister, Yvonne Erwin-Bowen, shares her reflections about her brother’s life.