If you've never read any of the Stephanie Plum series, I suggest starting at number one and working your way up. Also, the books on CD are great because the narrator they found is hilarious and does awesome voices to all the characters. If you like action-packed comedy with some sexual tension (and you don't mind some occasional f-bombs), this series is for you. Stephanie Plum is a bounty hunter who blunders her way through life and has several quirky side-kicks such as her Grandma Mazur and Lula, the ex-hooker.
The thing I like most about Stephanie is she is just an average gal stumbling her way through life, following her instincts to the best of her ability. She is not overly-sure of herself and manages to survive many sticky situations with some luck and some help from her friends and family.