When Bob and Mary hear of a mysterious family legend about a hidden necklace, they are determined to solve the puzzle. But their older cousin Ralph is not all that he appears to be, and the search for a secret passage takes a frightening turn.
| ISBN: | 9780753727041 |
| Publication date: | 1st July 2014 |
| Author: | Enid Blyton |
| Publisher: | Bounty an imprint of Octopus |
| Format: | Hardback |
| Pagination: | 272 pages |
| Series: | Enid Blyton: Adventure Collection |
| Genres: |
Adventure Stories Classic Literature |