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When he discovers that he has a twin he never knew existed, the studious Julius Benedict (Arnold Schwarzenegger) sets out to find his long-lost sibling and is shocked to discover that his brother is a diminutive petty crook (Danny DeVito). Kelly Preston, Tom McCleister and David Caruso also star in this hilarious 1988 laffer from veteran comedy director Ivan Reitman (Ghostbusters, Kindergarten Cop).