Obsession: The Unspoken Sin by Christi Caldwell

A ruined lady. A righteous earl. A second chance no one saw coming.

He came to drag her home. He didn’t expect to want her.
Lady Alice Masterson was meant to disappear quietly into Scotland. Instead, the Earl of Denbigh finds her thriving in London’s most infamous gaming hell—brazen, beautiful, and scandalously off-limits. She’s his best friend’s sister. He’s the last man she can have.
But when old sparks turn to slow-burning fire, and long-buried secrets come to light, passion may be the one thing they can’t resist.
Desire was never part of the plan… but neither was falling in love.