- Author:
- Sir Arthur Conan Doyle
- Dramatised by:
- Clifford Witting
- Music composed by:
- Max Harris
- Film sequences - Cameraman:
- Charles Lagus
- Film sequences - Editor:
- Stephen Cross
- Costume Supervisor:
- Vanessa Clarke
- Make-up Supervisor:
- Shirley Boakes
- Script Editor:
- Anthony Read
- Designer:
- Archie Clark
- Producer:
- David Goddard
- Director:
- Peter Cregeen
- Tom Randall:
- Ronald Adams
- Frank Randall:
- Pierce McAvoy
- William RandalI:
- David Harrison
- Theresa Wright:
- Peggy Thorpe-Bates
- Sir Eustace Brackenstall:
- Michael Gover
- Lady Brackenstall:
- Nyree Dawn Porter
- Sherlock Holmes:
- Douglas Wilmer
- Dr. Watson:
- Nigel Stock
- Porter:
- Douglas Ives
- Det-Insp. Hopkins:
- John Barcroft
- Sgt. Mitchell:
- Keneth Thornett
- Cabbie:
- Ian Anders
- Capt. Croker:
- Peter Jesson
