Slightly sinful - Mary Balogh

On a Flemish battlefield Lord Alleyne Bedwyn is thrown from his horse and left for dead, only to awaken in the bedchamber of a Brussels brothel. The dark, handsome diplomat has no memory of who he is or how he got there - yet of one thing he is certain: he owes his life to the angel of undoubtedly dubious virtue who is nursing him back to health.

But like him, Rachel York is not who she seems. The havoc of war has forced Rachel to seek refuge with the 'ladies' of the house whilst devising a plan to restore her fortunes. The dashing soldier she rescued from near-death could be her saviour in disguise. In order to inherit, Rachel needs to be married and here is a man with no memory - and thus no ties - willing to do anything to help her. However on returning to England, their marriage charade draws them both into danger, scandal and a blossoming relationship that is ever so slightly sinful...