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Brawny burglar Peter Jade (Peter Paul) is an infamous criminal who manages to gain access to a huge stash of diamonds. He also happens to have an equally muscular twin, David (David Paul), who, unlike his thieving brother, is an upstanding police officer. Despite their differences, Peter and David must work together to take down the devious Philip Chamberlain (Roddy McDowall), an unrepentant villain set on getting the diamonds at any cost, even if it means resorting to murder. Wikipedia