The Mattress Affair (Flint and Steele Mysteries, #1)

Flint has all the earmarks of a good detective--intelligence, curiosity, a great nose for sniffing out clues and criminals, and an intense passion for protecting the innocent. The only difference between him and Mickey Spillane is that Flint is a dog--a cute Labrador retriever with a penchant for solving crimes and mysteries. Together with his human partner, Meredith Steele, he sets out to rid his beloved hamlet of Gros Cap of nefarious criminals.
Flint’s first major case involves a neighbor, her nephew and a nasty goon.