In the third installment of A Dog and His Girl Mysteries, things are going to the cats!Dodge and Cassie can't visit the senior center or take a walk without landing in a mystery or two. Something's up with the vitamins some people in town are taking—and something doesn't seem right about an eccentric neighbor's mysterious "fall" that leaves thirteen pets in need of homes. The former K-9 and his girl will leave no ladder unclimbed or rosebush uninvestigated to get to the bottom of the case!