Holmes and Watson travel to Sussex to investigate the murder of Squire Douglas, who was shot to death in a sealed-up castle, with only two apparent suspects.
| Name | Type | Role | |
|---|---|---|---|
| Sheldon Reynolds | Writer | ||
| Frank Dexter | Guest Star | ||
| Russell Waters | Guest Star | ||
| Maurice Teynac | Guest Star | ||
| Richard Larke | Guest Star | ||
| Sheldon Reynolds | Director |