You must always be polite to people whose position forbids them to be rude to you. - Agatha Christie

“No,” said Miss Marple. “Murder isn’t a game.

The illusion that freedom is the prerogative of one’s own particular race is fairly widespread. Dr Gerard was wiser. He knew that no race, no country and no individual could be described as free. But he also knew that there were different degrees of bondage.

Then there are some minor points that strike me as suggestive - for instance, the position of Mrs. Hubbard's sponge bag, the name of Mrs. Armstrong's mother, the detective methods of Mr. Hardman, the suggestion of Mr. MacQueen that Ratchett himself destroyed the charred note we found, Princess Dragomiroff's Christian name, and a grease spot on a Hungarian passport.