A terrifying storm washes Conor, his little brother, and two American friends up on to Ox Island where they become prisoners of the eccentric Lady Agnes who will stop at nothing to uncover the Druid Treasure.
- ISBN10 0671866893
- ISBN13 9780671866891
- Publish Date 1 June 1993 (first published February 1966)
- Publish Status Active
- Publish Country US
- Imprint Simon & Schuster
- Format Paperback (US Trade)
- Language English