Actor Patrick Macnee leads the viewer through London in the footsteps of the genius private investigator Sherlock Holmes and his assistant and friend, Dr. Watson.
| Actor | Role |
|---|---|
| JJean HaynesNot listed | Not listed |
 Patrick MacneeNot listed | Not listed |
 Christopher LeeNot listed | Not listed |
 Ian FlemingNot listed | Not listed |
 Lionel AtwillNot listed | Not listed |
 Nigel BruceNot listed | Not listed |
 Lawrence GrossmithNot listed | Not listed |
 Basil RathboneNot listed | Not listed |