Brought to London under mysterious circumstances by his tutor, a young boy seeks the help of Sherlock Holmes when his tutor is kidnapped and he himself is threatened with the same fate.
- ISBN10 0689306415
- ISBN13 9780689306419
- Publish Date 1 January 1978
- Publish Status Out of Print
- Out of Print 11 December 2011
- Publish Country US
- Publisher Simon & Schuster
- Imprint Atheneum Books for Young Readers
- Format Paperback
- Language English