Something very sinister is happening on the mysterious Isle of Gloom and the children are determined to uncover the truth!
But Philip, Dinah, Lucy-Ann and Jack are not prepared for the dangerous adventure that awaits them in the abandoned copper mines and secret tunnels beneath the sea.
For Ages: 9+ years old
Number Of Pages: 275
Published: 1st January 2011
Dimensions (cm): 19.5 x 13 x 2