What caused the death of the terrified Miss Stoner's sister? Will she die the same way? And what was "the speckled band" to which the sister alluded in her dying breath? Sherlock Holmes is warned not to investigate.
| Name | Type | Role | |
|---|---|---|---|
| Arthur Conan Doyle | Writer | ||
| Giles Cooper | Writer | ||
| Nigel Stock | Guest Star | ||
| Lian Aukin | Guest Star | ||
| Felix Felton | Guest Star | ||
| Rupert Davies | Guest Star | ||
| Mary Holder | Guest Star | ||
| Marian Diamond | Guest Star | ||
| Nan Marriott-Watson | Guest Star | ||
| Donald Douglas | Guest Star | ||
| Douglas Wilmer | Guest Star | ||
| Robin Midgley | Director |