Trouble is brewing in the underwater land of the selkies when a young seagirl is discovered unconscious in Owlchurch. She's been poisoned by a curse that's spreading throughout the sea world - a curse that must be stopped before it affects the whole Hidden World. When Thomas promises to help, he and his friends travel to the wild and amazing land of the seafolk where they embark on an exciting adventure at the very depths of the ocean.
- ISBN10 0340894873
- ISBN13 9780340894873
- Publish Date 20 September 2007
- Publish Status Out of Print
- Out of Print 16 December 2014
- Publish Country GB
- Publisher Hachette Children's Group
- Imprint Hodder Children's Books
- Format Paperback (B-Format (198x129 mm))
- Pages 224
- Language English