Five million dollars. One signature. Total ownership. Julian Ellis is drowning. Left with a legacy of ruin and a $5.2 million debt he can’t pay, he is one day away from total collapse when a lifeline appears in the form of Silas Ashworth. Silas is a billionaire, a phantom, and a man who always gets what he wants. And what he wants is Julian. The offer is simple: Silas wipes the debt clean. In exchange, Julian belongs to him for six months. No questions. No resistance. Total submission within the walls of Silas’s cold, glass-walled penthouse. But this isn't a chance encounter. Silas hasn't just bought Julian's debt; he has been tracking Julian's every move for years. He didn't just save Julian from the edge—he’s the one who guided him there. As Julian falls deeper into a world of high-stakes control and dark desire, he realizes that the chains on his wrists are the least of his worries. The man who owns him doesn't just want his body for six months. He wants to keep him forever. Collateral is a standalone Dark MM Romance featuring debt bondage, forced proximity, an obsessively possessive anti-hero, and a guaranteed HEA