The Kingpin’s Omega Lover by A.M. Arthur

A broken omega who wants to kill, and the kingpin who will do anything to protect him.
Malori Cann has nothing to live for except vengeance. He lost his family, his freedom, his children, and barely survived three years of unspeakable abuse, before his rescue by King’s organization. Now a guest in King’s fortified home, Malori’s sole goal is finding his stolen children and punishing the man who shattered the last of his fragile trust.
Alexander “King” Kingston has a reputation for being stone-cold and wholly focused on business. So why is he willing to risk everything just to make Malori smile? King knows better than to mix business with pleasure, but the two become entwined when he and Malori give in to their mutual attraction.
King’s main focus is on leaving his life of crime behind and keeping his family safe, Malori included. But doing so comes with intense risks, and King may have to choose between the promises he made to his brother and best friend—and the promises he made to the man he’s falling in love with.