Dido's sister, Is, travels north to try and find her lost cousin. But instead of the promised Playland, she discovers an underground kingdom where children work as slaves in the worst conditions imaginable - under the rule of the sinister Gold Kingy...
| ISBN: | 9781782955528 |
| Publication date: | 29th June 2015 |
| Author: | Joan Aiken |
| Publisher: | Red Fox an imprint of Penguin Random House Children's UK |
| Format: | Paperback |
| Pagination: | 288 pages |