The S.I.A. chief has a new mission for him - to break into the safe of a man named Bjornsen and steal N.A.T.O. defence secrets before he can sell them to the highest bidder.
In Geneva, Mundy meets the blonde again, and her boyfriend, George Palmer, also a thief. He is also planning on breaking into the same safe, but for a different reason - to steal a valuable necklace...
Likable Bill Bixby guests here as 'Palmer', a fellow thief. The actor was best known at that time for the sitcom 'My Favourite Martian', and would go on to star in 'The Magician' and 'The Incredible Hulk'. The best moments feature Palmer and Mundy trying to out-con one another. At one point, Mundy even uses fake police to attempt to deport his rival!
There's no actual battleship here, only a model one in Bjornsen's villa, and this is where the valuables are.
Favourite moment - Palmer and Mundy duking it out in a hotel room while the blonde ( never named, incidentally ) sits watching them, calmly eating an apple!