Josh Powell told a group of his wife's friends and coworkers a year before she disappeared that if he were ever to commit murder, he'd dispose of the body by dropping it down an abandoned mine. That and other clues led West Valley City police to launch an exhaustive search abandoned mines in Utah's West Desert, beginning just days after Susan Powell's disappearance. They kept that effort secret, even as frustrated volunteers launched their own searches for Susan's body across the Great Basin. Now, the full story of the secret mine search comes to light for the first time.