She had a secret she'd do anything to hide. Agatha Cunnington, a headstrong beauty from the country, has come to London in search of her missing brother James. The only clue she has is a cryptic letter signed The Griffin. Agatha decides to disguise herself as a respectable married woman so that she can go about the city unnoticed. But for her charade to work she needs a suitable "husband," preferably someone tall, elegant, and rakish-someone like Simon Montague Rain.