The Age of Assassins

Twenty years after the end of World War II, international agents try to apprehend the world's largest diamond in this offbeat spy comedy. An eight year-old boy had the diamond sewn inside him during the war to smuggle the bauble out of the country. A mad scientists tortures one of the former Nazi guards to learn the identity of the now-adult diamond carrier.
(Source: Dan Pavlides, Rovi; Rotten Tomatoes)