A somewhat ditsy heiress named Cindy Conrad comes by Mannix' office one evening, complaining that a mysterious woman has been phoning her to offer important information about the death of Conrad's father several years before. Mannix correctly guesses that the caller wants a large sum of money to provide the information. He tries to convince Conrad to ignore the calls -- but he begins to believe that something is wrong when someone takes a shot at them as he is escorting Conrad to her car.
Did You Know?
The location where Mannix met up with Cindy in the final act was a warehouse full of studio lighting equipment. Most likely the storage facility for Paramount's lighting gear. See more
After Thelma Wilkins leaves Mannix' office, she is shown driving down a street where she passes an intersection with a sign prominently advertising the "Shaver Clinic." The shot changes to a closeup of her in her car noticing that two men are following her, then an exterior shot shows her driving passed that same intersection with the same clinic sign, traveling in the same direction, before she executes an evasive maneuver. See more