by EnidBlyton (Author)
For Philip, Dinah, Lucy-Ann and Jack, the holiday in Cornwall is everything they'd hoped for - until they begin to realise that something very sinister is taking place on the mysterious Isle of Gloom. But they're not prepared for the adventure that awaits them in the abandoned copper mines and secret tunnels beneath the sea.
Format: Unabridged
Pages: 192
Edition: New Edit/Cover
Publisher: Macmillan Children's Books
Published: 06 Feb 1998
ISBN 10: 0333732766
ISBN 13: 9780333732762
Children’s book age: 9-11 Years