There aren't really any plot twists or surprises in this story. What seems to me to be the biggest clue to the whole mystery flops out at you like a dead fish right in the middle of the book, and you have to wait until the end to see Jupiter finally seize upon it. Overall, though, it is still a pretty good story. It's hard to go wrong when you are writing about pirates, ghosts, and treasure. My childhood obsession with the secret headquarters at the Salvage Yard obviously continues because I certainly missed it in this book. The boys seemed to be somewhat out of their element here, and it shows. Of course, nothing can stop them from solving a mystery once they are on the case.