For Philip, Dinah, Lucy-Ann and Jack, the holiday in Cornwall is
everything they'd hoped for—until they begin to realize that something
very sinister is taking place on the mysterious Isle of Gloom. But
they're not prepared for the dangerous adventure that awaits them in the
abandoned copper mines and secret tunnels beneath the sea.
Description:
For Philip, Dinah, Lucy-Ann and Jack, the holiday in Cornwall is everything they'd hoped for—until they begin to realize that something very sinister is taking place on the mysterious Isle of Gloom. But they're not prepared for the dangerous adventure that awaits them in the abandoned copper mines and secret tunnels beneath the sea.