She broke into his world searching for her missing sister. Now she can't escape—and isn't sure she wants to. Elara Monroe has spent three years hunting for her sister Maya, who vanished without a trace. Her investigation leads her to break into the office of the city's most dangerous man—Cain Harlow, a billionaire with a lethal reputation and secrets that could destroy them both. But instead of turning her in, Cain makes her an offer: he'll help find Maya if Elara shares her evidence against the trafficking network he's been hunting for a decade. She should refuse. She should run. But Maya's alive somewhere in the darkness, and Cain might be her only chance at salvation. As they descend into a world of violence, lies, and impossible choices, the line between ally and enemy blurs. Cain is possessive, dangerous, and willing to burn the world down to keep Elara safe. And Elara is falling for the one man who could either save her sister—or destroy everything she loves. He's a monster with a mission. She's the light he never knew he needed. Together, they'll tear apart an empire to save one girl. But some rescues come at a price neither of them is prepared to pay. Content Warning: This dark romance contains mature themes including violence, trauma, morally gray characters, obsessive behavior, and references to human trafficking (not graphic). Intended for 18+ readers.