Katherine Davenport gave half her liver to save her adoptive sister. In return, her family cast her aside—until they needed a decoy bride for Sebastian Blackwood, the wheelchair-bound outcast their precious Isabella refused to marry. The city sees Sebastian as a broken heir. In reality, he's the most dangerous man in America, secretly ruling an empire from the shadows. Two people everyone underestimates. One marriage meant to humiliate them both. The family that brought them together has no idea what they've unleashed.