The Affair of the Blood-Stained Egg Cosy — James Anderson

The theft of the diamond necklace and the antique pistols might all be explained, but the body in the lake is particularly puzzling. 'Don't expect me to solve anything,' Inspector Wilkins announces modestly when he arrives to sort out the unpleasantness. And at a gathering that includes English aristocracy, foreign agents in disguise, a ravishing baroness, a daring jewel thief, a Texan millionaire and, of course, the redoubtable butler, it would take some intricate sleuthing to uncover who killed whom and why.
For whodunnit fans who prefer their villains to be nice and refined people, the sort who quote Shakespeare and knock off their nearest and dearest between rubbers of bridge, The Affair of the Bloodstained Egg cozy is a delectable treat.