Cowabunga Dead: Grandfather Mummy Series #3

Jo, Ava, and Hank Skinner don't take too kindly to someone murdering a popular
television reality star and dumping the body into the moat of the Clankerton Medieval Museum. To top things off, because of the murder, the town mayor shuts down Hank's money making endeavor. This simply won't do. The sooner they find the murderer the sooner Hank can get back to hauling in the dough.