When John, Harry and Molly decide to visit an old ruin, a series of intriguing discoveries leads them deep underground and into the heart of Skytop Hill. However, little do they know what dark secrets they will uncover there.
- ISBN10 0753727056
- ISBN13 9780753727058
- Publish Date 1 July 2014 (first published 16 October 1998)
- Publish Status Out of Print
- Out of Print 26 March 2021
- Publish Country GB
- Publisher Octopus Publishing Group
- Imprint Pyramid
- Format Hardcover
- Pages 352
- Language English