Earl of Hearts. The Farthingale Series, #6

Love comes to those who need it most. What happens when an earl determined never to love meets the only woman who can tear down his defenses? She happens to be his best friend's sister and now they must go on the run to save her life. Lady Nicola Emory adored her brother's best friend, John Randall, Earl of Bainbridge, from the moment she met him. But the handsome earl, a mysterious and tormented agent of the Crown, never gave her any notice until the eve of her betrothal to another man.
How was she to know her intended betrothed was plotting to overthrow the Crown? When Nicola stumbles upon the proof of his treason, she's suddenly on the run for her life and John is the only one who can protect her. But in saving her life, will he put his heart at risk?John Randall long ago decided never to allow anyone into his heart. Protecting the royal family and defeating England's enemies are all he needs in his life.
That suddenly changes when he's forced to go on the run with Nicola Emory, the one girl with the power to steal his heart. With every hour they spend together, he finds his solid wall of protection collapsing. He's faced death many times before and doesn't fear it. But admitting his love for Nicola will force him to confront the demons haunting him since childhood. Will digging up those dangerous memories free his heart? Or close it to love forever?Enjoy the entire series:The Viscount's RoseA Midsummer's KissRules for Reforming a RakeMy Fair LilyThe Duke I'm Going To MarryEarl of HeartsCapturing the Heart of a Cameron