The rules of engagement are clear: it's all-out war. And their hearts are on the line.

One Moment, Book 1

It's not that Abby Harkness's ex cheated. Hell, it's not even that he did the dirty with her own sister. The worst part? Everyone—even her own mother—knew about it before she did.

These days, Abby's nomadic job makes it easy to stick to the rules that protect her heart. Rule number one: Never stay in any man's bed more than one night. But when a carefully planned tryst falls through, she finds herself stranded in a boardroom—naked—with the one man who makes her body scream danger.

Three hours of mind-blowing sex later, Marcus Brookhein walks out of the boardroom feeling like he just lost. That doesn't sit with someone who lives and breathes competition. Next time, he's making the rules. Starting by getting her assigned to work side by side with him.

Abby is desperate not to repeat a night of pleasure that left cracks in her carefully constructed defenses. But four long weeks of close proximity loom before her. And Marcus has a lot to teach her about playing dirty...

Warning: Contains a contest of wills with hot sex. Epic hot sex. Pushing-the-limits sex. On a conference table. On the kitchen counter. On the floor—because they never quite make it to the couch.