Crankier than ever, Agatha Raisin wants to forget that her husband left her to enter a monastery—a turn of affairs more humiliating than when she caught him with a mistress. She feels abandoned, fat, frumpy, and absolutely furious.

What are her options? She takes an island vacation and joins a Pilates class. But what finally lifts her spirits is finding a corpse. The dead girl was a member of Agatha's exercise class, afloat in a rain-swollen river, dressed in a bridal gown, and clutching a wedding bouquet. Agatha's policeman friend Bill Wong suggests she leave this macabre murder to the Worcester CID. Pah! What do they know? Once she enlists the aid of the bachelor mystery writer next door, puts on a disguise, and interviews some likely suspects, Agatha will be her brash, redoubtable self again—unless she becomes the killer's next victim first …