Five Have A Mystery To Solve - BLYTON, EnidKnight Books, 1974, Paperback.
Condition: Very Good
This is the Famous Five's twentieth adventure. They find a mystery waiting for them on Whispering Island, also called Wailing Island and Keep-Away Island. At the end of the cliff passage there is vast chamber full of golden statues and other treasures, but there are also villains lurking around the corner…