Lady Philippa Marbury is odd, and she knows it: the bespectacled, brilliant fourth daughter of the Marquess of Needham and Dolby cares more for books than balls, for flora than fashion, and for science than the Season. She's engaged to the sweet-but-dull Lord Castleton and content to see the marriage as her duty — but first, with two weeks of freedom left, she wants to research the scandalous parts of life she's never allowed herself.
To do it properly, she needs a guide who knows London's darker corners: Cross, the clever, controlled co-owner of the Fallen Angel, London's most notorious gaming hell, whose carefully built reputation for wickedness makes him perfect for her purposes. When the unconventional Pippa propositions him — seeking science without emotion, ruination without its repercussions — she threatens everything he's spent his life protecting.
The second novel in Sarah MacLean's New York Times bestselling Rules of Scoundrels quartet, One Good Earl Deserves a Lover is a witty, steamy Regency romance about a woman determined to run one honest experiment, and the scoundrel who can't stay a detached observer.