Lean Mean Thirteen by Janet Evanovich

From the publisher (source: The Internet Book List):
New secrets, old flames, and hidden agendas are about to send bounty hunter Stephanie Plum on her most outrageous adventure yet!

MISTAKE #1

Dickie Orr. Stephanie was married to him for about fifteen minutes before she caught him cheating on her with her arch-nemesis Joyce Barnhardt. Another fifteen minutes after that Stephanie filed for divorce, hoping to never see either one of them again.

MISTAKE #2

Doing favors for super bounty hunter Carlos Manoso (a.k.a. Ranger). Ranger needs her to meet with Dickie and find out if he's doing something shady. Turns out, he is. Turns out, he's also back to doing Joyce Barnhardt. And it turns out Ranger's favors always come with a price...

MISTAKE #3

Going completely nutso while doing the favor for Ranger, and trying to apply bodily injury to Dickie in front of the entire office. Now Dickie has disappeared and Stephanie is the natural suspect in his disappearance. Is Dickie dead? Can he be found? And can Stephanie Plum stay one step ahead in this new, dangerous game? Joe Morelli, the hottest cop in Trenton, NJ is also keeping Stephanie on her toes-and he may know more than he's saying about many things in Stephanie's life. It's a cat-and-mouse game for Stephanie Plum, where the ultimate prize might be her life.

About the author:
Janet Evanovich (1943-) is an American writer. She began her career writing short contemporary romance novels under the pen name Steffie Hall, but gained fame authoring a series of contemporary mysteries featuring Stephanie Plum, a former lingerie buyer from Trenton, New Jersey, who becomes a bounty hunter to make ends meet after losing her job. The novels in this series have been on multiple bestseller lists. She has over two hundred million books in print worldwide and is translated into over 40 languages.

This book is part of the "Stephanie Plum" series.
Here are some other books from this series: