The Secrets of a Scoundrel - Number 7 in series

Nick, Lord Forrester's reputation is legendary-both as a lethal warrior and a wicked lover. But when his rule-breaking ways land him in a Scottish dungeon he's left there to rot, until a mysterious lady visits his cell, offering him a way out. All he must do is risk his neck on the mission she proposes-and obey her every command. One look at the luscious beauty has Nick ready to promise her anything, but he must resist his desire, or she could send him straight back to prison.
Virginia, Lady Burke, is well aware that the powerful ex-spy will try to take command of their quest, but it's her job to keep him under control. Yet how can she keep this untamable scoundrel under her thumb when all she really wants is to unleash the smoldering passion between them?