This book gives the true essence of adventure and mystery. The four kids and the dog have a mind blowing time on the whispering island, A place which was forgotten long ago, now has the treasure of the nation . The children are in the middle of an unwanted adventure.The author has been successful in creating suspense through out the book.This is a must read book for all of us.and has no age limit.i experienced immense pleasure while reading this book and I think you all should experience the essence