Running Deep traces the true story of a Cold War submarine that vanished without trace in the Arctic Ocean. Tom Clavin's gripping narrative follows the USS Scorpion, its final mission, and the classified investigation that followed its mysterious disappearance in 1968. Through meticulous research and interviews, Clavin reconstructs the tension, technical challenges, and human drama aboard one of the Navy's most advanced vessels, while exploring theories about what caused one of the ocean's greatest unsolved mysteries. A compelling blend of military history, espionage, and deep-sea investigation.