Freddie Brower, a guy who is going through a messy divorce wins $30 million in the lottery. In order to keep his wife from making a claim on the money, he asks his uncle Leon Lamarr to claim the money for him. Leon agrees, but it turns out he is broke, so he kills him - and Freddy's wife is helping him. When Columbo investigates Freddy's death, he goes to Leon and learns he's the lottery winner; however, certain things don't add up, which make Columbo think Freddy's death might not be an accident.
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