Which author wrote the 'Stephanie Plum' series?

Janet Evanovich wrote the 'Stephanie Plum' series. The books follow Stephanie Plum, a former lingerie buyer from Trenton, New Jersey, who becomes a bounty hunter after losing her job and falling into financial trouble.

The series began with One for the Money in 1994. Evanovich drew inspiration for Stephanie's bounty-hunter career from the 1988 film Midnight Run, starring Robert De Niro and Charles Grodin. She also researched bail enforcement and Trenton to make the setting and profession convincing.

Evanovich first wrote contemporary romance under the pen name Steffie Hall before becoming known for her humorous mystery-adventure novels. One for the Money introduced recurring characters such as Joe Morelli, Ranger, Grandma Mazur, and Lula. The series is sometimes confused with Evanovich's other collaborations, including the Fox & O'Hare books written with Lee Goldberg, but Stephanie Plum is Evanovich's signature creation.