Lock by Lilly Atlas

Lock is a man haunted by past mistakes, struggling to rebuild his life. Devastated by the loss of his twin sister to a drug overdose, he now bears the weight of raising her infant son. Overwhelmed by grief and the responsibility thrust upon him, Lock seeks solace in the very substances that stole his only sibling. But when the president of his motorcycle club lays down an ultimatum, Lock has no choice but to face his heartache. With a chance for redemption, his only priorities are being a good father and regaining his club’s trust, even if he’ll never feel worthy.
Freshly single and excited to regain her independence, Brenna stumbles upon a problem that could cost her more than she ever imagined. Unwilling to be a pawn in her ex’s dangerous game, she steps into the ruthless world of the motorcycle club. But instead of finding men who live up to the horrific rumors, Brenna finds allies in an unexpected place. The MC members, appalled by her ex’s callousness, promise to protect her and seek vengeance against her ex. Assigned to safeguard Brenna, Lock finds himself drawn to her strength and vulnerability.
As they navigate a path filled with challenges and desire, Lock and Brenna’s connection deepens. But the question looms: can their attraction survive the stark differences in their worlds?
Brenna, an outsider to the MC, and Lock, a man desperate to rebuild his life and be a good father, face an uncertain future. But when they believe the most significant threat is behind them, Brenna’s ex emerges as a more formidable adversary than imagined. A relentless enemy, he threatens to tear them apart before they can confront their inner demons and find happiness.