He's a two-fisted American adventurer and veteran of a hundred waterfront brawls. He's "Ponga Jim" Mayo, and he minds his own business and leaves international intrigue to others. But, as master of his own tramp freighter, trouble seeks him out as he navigates the treacherous East Indian seas from Borneo to Singapore. Never one to back away from danger, Jim straps on his colt automatic and takes the helm of the Semiramis , ready to battle pirates and spies, dope peddlers and gunrunners and whoever else dares to challenge his command . . . and God help the man who crosses Jim Mayo.