Katie and Derek head south to visit Katie's cousin in Florida. They're looking forward to some sun, surf, and sand. But the little town is seeing its first ever series of deadly shark attacks, and it looks like the tourist season is going to dry up before it even gets started. With friends and neighbors disappearing into the ocean, Katie's cousin suspects that there's something even more fishy going on and asks for her help in solving the mystery. Can Katie find out what's happening to the missing people and why this little town is under aquatic attack? Find out in the 18th Katie Carter Mystery Story!