Motor Mouth (2006) is the second book in Evanovich’s Barnaby & Hooker series. It follows Alexandra “Barney” Barnaby, a sharp-tongued mechanic, and NASCAR driver Sam Hooker as they stumble into a wild caper involving stolen racecar technology, murder, and a missing corpse.

The story mixes fast-paced action, quirky humor, and a touch of romance as Barney and Hooker get dragged into increasingly chaotic situations, chased by bad guys while trying to clear their names.

At its core, it’s a lighthearted crime romp with cars, comedy, and a dash of steamy tension.