Darkest Valentine - Darkest, #1

Death and destruction haunts The Dark Duke. Left unchaperoned and stranded, Lady Lillian Lancaster has no choice but to find her way home, and quickly before her reputation is ruined. Betrayed by those closest, she's forced to trust the daring rogue who rushes to her rescue. When the Dark Duke reveals his identity and proposes a false engagement in exchange for further protection, Lillian is concerned and intrigued-yet enamored by the shadows which haunt his eyes and fuel the horrid whispers behind his back.
Clarence, Duke of Canterbury, knows his father's death was no suicide and will stop at nothing to clear the family's shame. He can't believe his good fortune when he stumbles upon the niece of the very man he suspects is responsible. Not only does she hold the connections he needs to uncover explicit proof, but the very means to seeking revenge. However, the more time he spends wooing Lillian's trust, the more he begins to doubt his ability to enact the plan.
Can their fake engagement stand up to dark family secrets? Or will revenge win out and shatter both their lives?