This book is the sixth in the Three Investigator series. "The Mystery of the Vanishing Treasure" precedes this book, and "The Mystery of the Fiery Eye" follows. As we learned in previous books, the Three Investigators are Jupiter Jones, Pete Crenshaw and Bob Andrews. Jupiter is the intelligent, sometimes inadvertently arrogant member of the group. Pete Crenshaw is typically the muscle of the group. Pete is usually quite fearless. Bob Andrews, who began the series with a broken leg, works at the library and handles records and research for the group. Bob's cast is off now but his leg is still weak.
The three boys travel to Skeleton Island and discover that the island is home to a ghost. The ghost rides the merry-go-round at an abandoned amusement park. The amusement park is to be the site of a film, but the ghostly happenings on the island are frightening local workers away and impeding the progress of the movie. In addition, the island was also supposedly the location where a pirate abandoned his treasure. Local treasure hunters have a habit of trespassing on the island to search for the treasure whenever someone finds a gold doubloon on or near the island. As if these mysteries were not enough, crooks may have hidden their loot near the island.
As with most of the stories in this series, this book was enjoyable to read. However, this book is weaker than most of the previous books in this series. The mystery was relatively mundane and the threats to the boys were frequently accidental rather than intentional. I always recommend starting with the first book in this series, "The Secret of Terror Castle," and I make that recommendation even stronger in the case of this book. You will gain a much better impression of the Three Investigators by starting at the beginning rather than with this book.
Quite a few children's mystery book series have become classics. Most people are familiar with Nancy Drew, the Hardy Boys, and Tom Swift. Even the Boxcar Children are relatively well-known. However, Alfred Hitchcock and the Three Investigators are well-written books that offer an intelligent, interesting and more contemporary alternative to many of the earlier classic series. Many people recall the earlier series well, but the Three Investigators series, which Robert Arthur wrote and debuted in 1964, has, for now, largely been overshadowed by the other series and generally forgotten. Fortunately, all of these books are available either from Amazon or from other internet sources.
Enjoy!