A Dead Man and Doggie Delights by Aleksa Baxter

When Maggie May Baxter moves to small-town Colorado all she wants is to take care of her grandpa and start a business with her best friend. But when she and her Newfoundland, Miss Fancypants, stumble across a dead body Maggie suddenly finds herself involved in solving a murder so her grandpa doesn’t go to jail. (Again.)