The Governor's Dog Is Missing — Sneed B. Collard III

What do you do when Montana's biggest mysteries land in your lap? If you're Slate Stephens and Daphne McSweeney, you get busy solving them. With geologist dads who haul them around the state, the twelve-year-old detectives have a knack for encountering unsolved cases―and landing in heaps of trouble.
In The Governor's Dog is Missing Slate and Daphne find themselves in the Montana capital of Helena. One morning, news erupts across the state―Governor Rickson's famous dog Cat has disappeared! Suspecting foul play, Slate and Daphne assemble a list of suspects, including the Governor himself. Then, they set out to prove their suspicions. Unfortunately, the truth―and Slate's and Daphne's relationship―prove far more complicated than they ever imagined.