He Chose His Mistress, So I Chose Justice

From the back cover

Cheryl Cobb has spent three months closing a deal, but the signed contract sits on the receptionist's desk for a week, held up by Evelyn Randall, the boss's niece. When the client's legal team demands a reassessment of the partnership, Cheryl takes the letter to Nathan Matthews, the company VP and her boyfriend of over a year. He brushes her off, defends Evelyn, and comes back empty-handed.

Then Cheryl notices a dusty-rose lipstick mark on Nathan's collar and the sweet perfume that belongs to the shop where the front-desk girls queue for lunch. Evelyn mocks her online, and Nathan likes the post. When a second client walks away because a contract was tossed as scrap paper, the boss threatens Cheryl's job over the forty-million-dollar account.

Cheryl stops chasing. She has the front desk's calls recorded, and when the client's CEO calls the boss himself, she stands ready to cast the footage to the conference-room screen.