Sherlock Holmes helps Scotland Yard to track down a killer who has been leaving three thistles next to each of the women he has murdered.
| Name | Type | Role | |
|---|---|---|---|
| Charles Early | Writer | ||
| Joseph Early | Writer | ||
| Richard Watson | Guest Star | ||
| Roland Bartrop | Guest Star | ||
| Richard Larke | Guest Star | ||
| Steve Previn | Director |