Karma Mends A Broken Crown - A Mornington Park Novel, #5

Oliver Prendergast the Duke of Dunsborough is London's worst cold hearted rake who has ever walked the streets. After experiencing a turbulent childhood that continues to plague his dreams always turning them into nightmares, he has finally lost the will to live, so when he has the opportunity to partake in a duel, he jumps at the chance. The only problem is Monique MacTavish holds the most accurate duelling pistols ever created and will not relinquish them except for one thing.
She will exchange the pistols if he will spend his last ten days on earth teaching her everything there is to know regarding the lessons in the bedchamber.