Daring the Forbidden Earl by Ava MacAdams

Intrigue makes for strange bedfellows…

Recently widowed Miss Johanna Carlton is tired of her passionless life. For the man she is secretly in love with is no other than her late husband’s nephew. And not only is he a scoundrel, but he obviously detests her.
Mark Carlton, newly appointed Earl of Sinclair, still cannot deal with what his late uncle did to his mother. Or with the fact that he stole the only woman he ever loved from him. Until a naughty letter of hers sets his heart suddenly aflame.
But with their affair kept a secret, a desperate pregnant lady, meddling friends, and a touch of blackmail aren’t the only things that stand in the way of their happy ending. Shadows of their past come back with a vengeance. And they won’t be put to rest until Mark draws his last breath…