A debutante-turned-spy. A duke’s brother with a dark secret. Falling in love was never part of the mission. If you like simmering mysteries, character chemistry, and pulse-pounding action, then you’ll love this Regency romance with a twist.

Had Morgan just proposed marriage to an enemy spy? He was the worst field agent in all history.

What happens when two rival scientists have to fight their growing attraction while they work together on a formula that will help England catch a dangerous spy?

With a dangerous spy on the loose, Catt and Rocky have to go undercover to catch him. Too bad they discover more about their hidden feelings for each other than about the spy's true identity.