The USS Triggerfish--an American World War II submarine--has come home over fifty years after she was presumed lost in the Atlantic. Now her dark gray hulk lies embedded in the sand of a San Diego beach, her conning tower barely above the breaking surf. The submarine is in the wrong ocean, her crew is missing . . . And her half-century absence is a mystery that's about to deepen. For the Triggerfish has returned, but she has not returned alone. Something...