The Dirty is book 2 in the series A Good Run Of Bad Luck and is best read in order.

Nathan
I always dated for fun. In my job, I didn't have time for anything serious, but that all changed in the blink of an eye. I was looking for Mrs. Stark, and I just found her. Reserved, sexy, every fantasy wrapped up into one beautiful package. But there's a side to her I never saw coming.

Penny
Everyone thinks I'm a good girl, and for the most part I am. I have a great job, I follow the rules, and I never cause trouble. At least, not outside the bedroom. When I met Nathan, his demeanor immediately screamed that he needed a release, and I was about to give him one.