Complex caper film about an attempted robbery of the Queen Mary. Sinatra stars as an American who is hired by a rich Italian, Lisi, and her German partner, Kjellin, to help renovate a sunken German U-boat and use it to threaten to sink the luxury liner if the thieves are not allowed to
board and plunder the ship. The producers tried to generate the same magic that made Sinatra's OCEAN'S 11 so popular. They didn't succeed but the results aren't too bad.