Thea Knight loves a spot of mischief. She especially loves her current mischief: masquerading as her sister, while finalizing her scheme to expose the dastardly knaves whose lies ruined her life. Then big, bad-tempered Lord Luxborough upends her game by maneuvering her into marriage. But it's her sister’s name on the license, so the marriage won’t be valid. Thea’s idea? Keep pretending to be her sister until she can run away.

Kitty Talbot needs a fortune. Or rather, she needs a husband who has a fortune. Left with her father’s massive debts, she has only twelve weeks to save her family from ruin. Kitty has never been one to back down from a challenge, so she leaves home and heads toward the most dangerous battleground in all of England: the London season. Kitty may be neither accomplished nor especially genteel—but she is utterly single-minded; imbued with cunning and ingenuity, she knows that risk is just part of the game.

Gorgeous, stubborn Esme Brentmor, daughter of a disgraced lord, is used to a wild, dangerous life among the tribes of Albania, to whom her father is the legendary, controversial Red Lion whose death she's courageously vowed to avenge - even if it leads to her own. Instead, her quest finds her rescued by the most unlikely (and very reluctant) hero! Lazy and spoiled, Lord Varian St. George has gambled away his heritage and lives on his considerable looks, charm and wits.

War hero Alistair Carsington really really loves women, and his romantic impulses have landed him in nearly as much danger as the Battle of Waterloo. To avoid his usual temptations and perhaps even repay the friend who saved his life, he's exiled himself to a place far from civilization - Derbyshire - in winter! Fate laughs at his good intentions and drives him straight into conflict with Miss Mirabel Oldridge, his match in tenacity, intelligence, and deviousness - who also happens to be wildly irresistible.

Darius Carsington is a spectacularly attractive rake, who's all brains and brawn...and no heart; a man who's equally expert at bedding loose-moraled women and writing scholarly papers. He finds society's "perfect darlings" exceedingly boring. Then why is he so intrigued by the supposedly faultless Lady Charlotte Hayward? Darius senses a crack under her polished surface - and finding it is a challenge he can't resist.