Self - Ex-Scotland Yard Detective
Sherlock Holmes (archive footage)
Dr. Watson
Ettie Douglas (archive footage)
Self (archive footage) (as Sir Arthur Conan Doyle)
Dr. Watson (archive footage)
Self - Forensic Scientist (as Dr Angela Gallop)
Self - Host
Self - President, Sherlock Holmes Society of London
Professor Moriarty (archive footage)
Self - Psychologist and Holmes Scholar (as Professor John Radford)
Sir Henry Baskerville (archive footage)
Narrated by