 Like Odysseue, Philip Vickers mysteriously reappears to his wife and friends during a party at her upscale country estate after an absence of four years. He had been presumed dead after he disappeared on a fishing trip with three friends to Portugal, where he was knocked unconscious and pushed overboard by an unknown assailant. In the interim, he had suffered from amnesia but now has regained his faculties. All the potential suspects including his wife are at the party, and when one of them is killed, the police are called in as suspicion for the crime falls on vengeful Vickers.