The Clues He Followed: Photos That Helped Vermont Man Find Lost Camera Owner

A camera lost in a creek in New York's Adirondack Mountains three years ago was returned to its owner thanks to clever detective work by a Vermont teacher. John Noerr, of Poultney, Vt., found the camera at the bottom of a stream while camping with his son in July. Watch two hours of "20/20" Friday, starting at 9 p.m. ET. (ABC News)