Context
Harry Houdini died on Halloween 1926. In life he had exposed fraudulent mediums, among them the Boston medium known as Margery. His widow, Beatrice "Bess" Houdini, offered $10,000 for a genuine message from him. She held a séance every Halloween for ten years. The couple shared a secret: in their vaudeville days they had worked a mind-reading act built on a spoken code, in which each word, or pair of words, stood for a letter.