His Possession In Discretion by S.K. Angel

Killian Russel is a ruthless, cutthroat, and arrogant billionaire. On track to being the wealthiest man worldwide, he has no time for love, feelings, or relationships. He has never found a woman able to make him settle down or willing to tolerate his insufferable temperament and behavior. Until he found her..

Brielle Newman is a shy, kindhearted, and trusting woman. Struggling to take care of her abandoned niece with two part-time jobs, she, too, has no time for love, feelings, or relationships. She has never met a man willing to accept her emotional baggage and responsibilities. Until she found him..
With Brielle’s toxic family coming back into her life, Killian’s rival intruding on his plans, and their relationship being built on the promise of blackmail, discretion is kept at the center of their lives. But secrets, lies, and deception are not the only things kept in hiding.
With this newfound relationship comes newfound consequences because Killian always gets what he wants, and what he wants is her. Not only has he found a personal assistant… but he’s also found a lover, a wife… a possession. And he will stop at nothing to keep his possession in discretion.