Cast & Crew
Gary Michaels leaves New York City and becomes a beach bum in the Florida Keys, and there, to support himself, he occasionally takes tourists skindiving. Swimming alone one day, he meets Kathy, a beautiful, mysterious British woman. They fall in love and meet frequently, but Kathy's life apart from Gary remains a mystery. Gary discovers that Kathy is the mistress of Nick Rogers, a heroin dealer posing as an art collector. Rogers hires Gary to dive for him, and Gary is introduced to Kathy at Rogers' luxurious Florida estate. Gary and Kathy continue to see each other in a nearby motel until Gary, after his first dive for Rogers, decides to report him to the authorities. Two of Rogers' "torpedoes," Angelo and Georgio, overcome Gary, shoot him full of heroin, and leave him for the narcotics squad. Dan Biller, a narcotics agent, enlists Gary's help in capturing Rogers, and with Kathy's assistance, they hope to learn where the next narcotics delivery will take place. One of Rogers' henchmen sees Kathy making love with Gary. He reports what he has seen to Rogers; Kathy is captured and tortured and raped while Rogers looks on. Rogers offers to release Kathy if Gary will make one more dive for him. Gary agrees, informs Biller, and goes out in a boat the next day with Angelo, Georgio, and Kathy. Gary kills Angelo and returns to surprise Georgio as he is molesting Kathy. He kills Georgio; Biller captures Rogers; and Gary and Kathy are reunited.