Adriatic, 1940s. Curtis was the pro. He could steer a sub through a saloon and one would tice. Duncan was the grumbler, more at home in the Aussie Outback than twenty fathoms under the Adriatic. Jervis was the spit-and-polish man, who knew the correct way to die. And George, the Cockney, was the toughest of them all. Four men in the Royal Navy s smallest sub, preparing the way for history s largest invasion. They had three tasks: slip into a closely guarded harbour, attach a time-charge to the Jerries biggest dry-dock, and escape with their lives if possible. The first two tasks were orders. The third was optional.