Bikini beauty Diana is all about the murdering and the gallows humor. Her psychiatrist Dr. Haggis thinks that she's turning into a psychopath. She overhears him planning to lock her up in an institution and wants him dead. She decides to recruit professional golf player Jerry Marshall. She knows that he hates his superior rival Mike Wilson and tells him to kill each other's target. He doesn't take her seriously until she kills Wilson with Jerry's golf club. Now, she expects him to kill her doctor.
The plot is essentially Strangers on a Train. It starts off well enough with crazy Diana. I like that she's a hot and crazy chick. The beach is a perfect place to start the movie. It all goes really well until she gets her kill and the movie passes to Jerry. I don't know anything about Paul Burke. He seems to be a solid veteran character actor who lasted 40 years in Hollywood. He's no pushover but he's not a great leading man either. He needs to be the equal to Carol Lynley. She is so beautiful and has such a crazy role that he can't match her. Every crazy thing she does only serves to separate from him. The movie basically stalls as Diana passes the baton to Jerry. He is not compelling enough to keep the narrative drive.