Episode
The Sign of the Four
- Adaptation: Hobbs radio dramas
- Episode: 51
- Airdate: 02 March 1963
- Canon basis: The Sign of the Four
Previous: A Study in Scarlet
Next: The Adventure of the Abbey Grange
| Cast | ||
|---|---|---|
| Carleton Hobbs | as Sherlock Holmes | |
| Norman Shelley | as Dr. John H. Watson | |
(cast list not finalised)