- Author:
- Sir Arthur Conan Doyle
- Dramatised by:
- Giles Cooper
- Music composed by:
- Max Harris
- Costume Supervisor:
- Sheila Glassford
- Make-up Supervisor:
- Shirley Boakes
- Script Editor:
- Anthony Read
- Designer:
- Stephen Bundy
- Producer:
- David Goddard
- Director:
- Gareth Davies
- Venucci:
- Terry Leigh
- Sherlock Holmes:
- Douglas Wilmer
- Dr. Watson:
- Nigel Stock
- Inspector Lestrade:
- Peter Madden
- Dr. Barnicot:
- James Bree
- Horace Harker:
- Donald Hewlett
- Police Constable:
- Desmond Cullum-Jones
- Morse Hudson:
- Martin Wyldeck
- Inspector Hill:
- Raymond Witch
- Mr. Gelder:
- Norman Scace
- Billy:
- Jimmy Ashton
- Josiah Brown:
- Arthur Hewlett
- Mrs. Brown:
- Betty Romaine
- Beppo:
- Andreas Markos
- Mr. Sandeford:
- Lloyd Pearson
