by Linda Sue Park In this thrilling ninth installment, Amy and Dan hit the high seas as they follow the trail of some infamous ancestors to track down a long lost treasure.
In the beginning of the book Amy and Dan and their au pair, Nellie, go on a trip to the Bahamas. Dan went to the water park and he was going on water slides in the park. The identity of the man in black is also revealed in this book. This was a great book. I recommend it to teens 11-14 and who like adventure books. I can't wait for Book 10 to come out on August 31, 2010!