Double Trouble (Paperback) (ISBN-13: 9798986088129)

Things are definitely going to be different in the Charles household, when Upton's brother, Arthur, comes to live with the family. Like Upton, Arthur is a Bichon Frise (that's BEE-shon free-ZEY) a little fluffy white dog.

Both Watson, Upton's feline assistant, and Upton are a little apprehensive until the Chief of Police calls to enlist the help of the entire Charles family. Arthur proves to everyone that he too is a talented canine sleuth.

Join the expanded Charles family in Double Trouble.