- Author:
- Sir Arthur Conan Doyle
- Dramatised by:
- Stanley Miller
- Script Editor:
- Donald Tosh
- Lighting:
- Gerry Millerson
- Sound and music:
- Alan Fogg
- Costumes:
- Ian Adley
- Make-up:
- Heather Stewart
- Designer:
- Ian Watson
- Producer:
- William Sterling
- Director:
- Bill Bain
- Sherlock Holmes:
- Peter Cushing
- Dr. Watson:
- Nigel Stock
- Lady Morcar:
- Madge Ryan
- James Ryder:
- James Beck
- Catherine Cusack:
- Diana Chappel
- John Horner:
- Neil Fitzpatrick
- Mr. Baker:
- Richard Butler
- Windigate:
- Ernest Hare
- Peterson:
- Frank Middlemass
- Mrs. Hudson:
- Grace Arnold
- Police Sergeant:
- Clyde Pollitt
- Breckinridge:
- Michael Robbins
- Mrs. Oakshott:
- Edna Dore
