Wealthy used-car dealer Zack Tyler and his wife stop to help two men seemingly having car trouble, only for the two thugs to rob Zack, and rape and murder his wife. Starsky and Hutch work all out using their underground contacts to track down the two murderers, but they don't quite realise that once they have found the culprits, that Zack intends to get even with his wife's killers by taking the law into his own hands.