Dr Hoo has been kidnapped! The mentor of the young heroes has been taken into the hidden kingdom of the enemy. The teens decide to descend deep underground to rescue him, but they are not prepared for what awaits them in the darkness below...
- ISBN10 1406247286
- ISBN13 9781406247282
- Publish Date 14 September 2012 (first published 1 January 2012)
- Publish Status Out of Print
- Out of Print 5 August 2013
- Publish Country GB
- Publisher Pearson Education Limited
- Imprint Raintree Publishers
- Format Paperback
- Pages 112
- Language English