Joe Mannix is invited to a party at the home of Phil Graves, with whom he served in the Army during the Korean War. Now Phil is a bank executive married to a wealthy socialite named Kathy. She confides in Joe that there have been three recent attempts on her life, including one that day when someone apparently tampered with the brakes of her car. Joe agrees to look into why someone would have tried to kill her, and pursues the identity of a mysterious "Sylvia," when he finds an expensive locket engraved with that name in Kathy Graves' car. Written by
Did You Know?
The interior of the Graves' house is the same set used for The Brady Bunch
(1969) (with just a few minor changes). The exterior shots are from a different house, however. See more
When Jessica first drives off from the parking lot she is going around the corner and up the hill the first time they show her foot on the brake. She would not need to brake there. Later she is fishtailing down the hill and going fast enough to slide around, but then turns to miss the truck and is able to come to a stop in a very short distance with no impact. When the car goes up on the dirt it is barely rolling. See more