Lady Emerson Haven grew up wild and untamed, unbound by the stifling rules of Regency London. Orphaned by tragedy and heiress to a vast fortune, she’s thrust under the guardianship of Lathen de Clare, the domineering Duke of Windemere. Tasked with preparing Emerson for her first season, Lathen expects her to be the lady she was always supposed to be—yet, at night, under the fashionable London townhomes and palaces, and through a black door, Lathen hides dark secrets that even the ton only whispers about. 

Lathen never had any intention of sharing his darkness with Emerson, but her fiery defiance ignites an undeniable attraction, drawing her into Lathen’s seductive and perilous orbit. Amid opulent balls and hushed intrigue their connection deepens, kindling a passion that blurs the line between protector and predator. Now, with the ton watching, Emerson must decide: will she step through the door and awaken to the darkness?