Welcome to Alderley, a magnificent mansion in the heart of the West Country where a grand house party is taking place. The preparations have been made, the guests have been invited, and the staff are on hand. What could possibly go wrong? Let the entertainment begin.

The theft of the diamond necklace and the antique pistols might all be explained, but the body in the lake - that really was a puzzle. 'Don't expect me to solve anything,' Inspector Wilkens announced modestly when he arrived to sort out the unpleasantness. And at a gathering that included English aristocracy, foreign agents in disguise, a ravishing baroness, a daring jewel thief, a Texas millionaire and, of course, the imperturbable butler, it was going to take some intricate sleuthing to uncover who killed whom and why.