Paleontologist Dr. Arthur Calgary visits the Argyle family to give them an address book that belongs to Jack Argyle. But he is told that Jack has been executed for the murder of his wife. But the address book can prove that Jack was innocent, so Dr. Calgary starts the investigation all over.
Once the murder was solved, the real mystery began...
Did You Know?
The scene with Christopher Plummer
shooting a rabbit in the woods was filmed in New Jersey and not Devon, where the rest of the film was shot. This was a scene added after principal photography had been completed--and Plummer could not return to work in England for tax reasons. See more