Eleven on Top by Janet Evanovich

From the publisher (source: The Internet Book List):
Stephanie Plum is thinking her career as a fugitive apprehension agent has run its course. She's been shot at, spat at, cussed at, fire-bombed, mooned, and attacked by dogs. Time for a change, Stephanie thinks. Time to find the kind of job her mother can tell her friends about without making the sign of the cross.

So Stephanie Plum quits. Resigns. No looking back. No changing her mind. She wants something safe and normal. As it turns out, jobs that are safe and normal for most people aren't necessarily safe and normal for Stephanie Plum. Trouble follows her, and the kind of trouble she had at the bail bonds office can't compare to the kind of trouble she finds herself facing now. Her past has come back to haunt her. She's stalked by a maniac returned from the grave for the sole purpose of putting her into a burial plot of her own. He's killed before, and he'll kill again if given the chance. Caught between staying far away from the bounty hunter business and staying alive, Stephanie reexamines her life and the possibility that being a bounty hunter is the solution rather than the problem. After disturbingly brief careers at the button factory, Kan Klean Dry Cleaners, and Cluck-in-a-Bucket, Stephanie takes an office position in security, working for Ranger, the sexiest, baddest bounty hunter and businessman on two continents. It might not be the job she'll keep for the rest of her life, but for now it gives her the technical access she needs to find her stalker. Tempers and temperatures rise as competition ratchets up between the two men in her life—her on-again, off-again boyfriend, tough Trenton cop Joe Morelli, and her bad-ass boss, Ranger. Can Stephanie Plum take the heat? Can you?

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: