The third novel in the School for Manners series finds the Tribble sisters, Amy and Effy, once again entangled in the machinations of the marriage mart. The formidable but lovable spinsters, who earn their living by sponsoring young girls and finding them husbands, take on the case of Delilah, a beautiful, mindlessly flirtatious country heiress.

What puzzles everyone is why such a beauty is unmarried at twenty-three and why she is ensconced in the London school of the zany Tribbles. The answer is found in the handsome person of Sir Charles Digby, who has recently returned from the Napoleonic Wars. He is startled to learn he is the cause of Delilah's single state but eager to remedy it.

As usual the Tribble sisters, with their salty exchanges and impossible schemes, provide delightful entertainment. And even as Delilah finds happiness, the sisters hear that another customer is on the horizon, an event to be celebrated by Amy and Effy.