As the war continues throughout Europe, Dashiell Blackwell, the Earl of Ravenwood, moves in the shadows, uncovering secrets and thwarting Napoleon's schemes as a trusted operative of The Lion Watch. With no room for distractions, he has resigned himself to a life of duty?one that does not include love or marriage. The battlefield and the whisper of coded messages have long been his world, and he has no intention of surrendering to the dangerous pull of emotion. ​​​​​​​ Lavinia "Vivy" Ellsworth has spent years watching Dash from afar, her heart belonging to him long before he ever took notice. As the daughter of a powerful duke there are expectations she must consider, but she has never been one to quietly obey. When she stumbles upon a secret that places her in the path of a deadly conspiracy, Vivy does the unthinkable?she takes matters into her own hands. When their fates collide in a whirlwind of intrigue and danger, Dash is forced to see Vivy as more than just a duke's daughter?she is clever, courageous, and far too tempting. Tasked with keeping her safe, he vows to protect her at all costs, even as she challenges every rule he has lived by. But with war closing in and enemies lurking in the shadows, can he keep his heart from becoming the ultimate casualty? As love and loyalty are tested, will Dash risk everything for the one woman he never dared to love? Or will duty demand the ultimate sacrifice?