Question: How did Willy Wonka know that Charlie and Grandpa Joe had stolen Fizzy Lifting Drinks? The entire time they were in the room they were completely alone and security cameras obviously didn't come into existence at the time.
Question: Does anyone know if the Jaguar hearse car still exists or who the manufacturer was?
Chosen answer: The hearse seen was custom built for the film, and was destroyed as seen in the film. other Jaguar hearses have been built, but they all have been custom built.
Question: One of the doctors Phibes blames for his wife's death during an operation is Dr. Hargreaves, whose head is crushed inside a frog mask during a costume ball. But earlier, while introducing himself to Phibes, Dr. Hargreaves says he is a psychiatrist ("headshrinker"). Why would a psychiatrist be present during an operation to save someone's life?
Answer: A psychiatrist is still an M.D., and still went to medical school. Perhaps this one had some knowledge of the case, or was simply on hand to provide assistance.
Answer: To treat anticipated shock.
Answer: Closed circuit security was invented in 1942 and came into common use in the late 60s and early 70s. Beyond that, Wonka could have had Oompa Loompas monitoring the group or simply noticed that they were gone and guessed.
Greg Dwyer