"The party that night turned out to be so much fun that Rose Rita forgot all about her troubles. She even forgot that she was supposed to be mad at Lewis. Mrs. Zimmermann taught Lewis and Rose Rita a couple of new card games (klaberjass and six-pack bezique, Winston Churchill's favorite card game), and Jonathan did one of his magic illusions, where he made everyone think that they were stumping across the floor of the Atlantic in diving suits. They visited some sunken galleons and the wreck of the Titanic, and even watched an octopus fight."
The Letter, the Witch, and the Ring by John Bellairs, p 8 of the Puffin paperback edition