The Perfect Rake by Anne Gracie

She ran from a brute…

Fleeing violent tyranny, Prudence Merridew escapes with her beautiful younger sisters to London. One of them must marry—and fast. To act as her sisters’ chaperone, Prudence invents a secret engagement to a reclusive duke…But when the duke arrives unexpectedly in London, she needs his help to avert disaster.

…into the arms of a rake

Aristocratic Gideon, handsome, rakish and with a strong frivolous streak, casually hijacks Prudence’s game, awarding himself a stolen kiss or three along the way. Used to managing sisters and elderly men, Prudence is completely out of her depth with a charming, devious and utterly irresistible rake. And her plot goes terribly—if deliciously—awry…