Spirited debutante Lady Olivia McLeod, cherished daughter of the Duke and Duchess of Strathaven, has two interests: solving mysteries and winning the love of her rescuer and secret crush, the infamous Duke of Hadleigh. When Livy joins Lady Charlotte Fayne's charity for young ladies and discovers that it is a front for a covert investigative agency, she is thrilled. Livy dedicates herself to solving a deadly case. Little does she realize that the path to danger will also lead to her heart's deepest desire.

He's a policeman on a hunt for justice. She's a proud daughter of the London criminal underworld. Danger brings them together...and desire binds them in this steamy enemies to lovers romance. Shattered by betrayal, former scholar Harry Kent has made a new life for himself as a policeman. Sent on a dangerous covert mission, he must protect a clever and wicked beauty who specializes in disguises and mischief. She stands for everything he scorns - and seduces him with every look of her innocent eyes.

After years of living as London’s brightest scandal, Lady Sesily Talbot has embraced the reputation and the freedom that comes with the title. No one looks twice when she lures a gentleman into the dark gardens beyond a Mayfair ballroom...and no one realizes those trysts are not what they seem. No one, that is, but Caleb Calhoun, who has spent years trying not to notice his best friend’s beautiful, brash, brilliant sister.

Alaric McLeod, Duke of Strathaven, is known as the Devil Duke for his wicked ways. Tormented by his past, Alaric knows better than to trust a woman, yet finds himself ensnared by a spirited, virtuous virgin - who accuses him of a crime he didn't commit. Is she his worst nightmare...or his salvation?

After a disastrous wedding night, proper Lady Helena Harteford fears for the fate of her new marriage. Disguised as a doxy, she tracks her husband down at a bawdy house to reason with him...and instead discovers the thrill of forbidden passion. An innocent ruse turns into a risky deception; how far will this once-wallflower go to win her husband's love?