- Adapted By:
- Felix Felton
- Novel By:
- Edgar Wallace
- Produced By:
- Donald McWhinnie
- The Four Just Men: Manfred:
- Valentine Dyall
- The Four Just Men: Poiccart:
- Howard Marion-Crawford
- The Four Just Men: Gonsalez:
- Felix Felton
- The Four Just Men: Thery:
- Theodore Bikel
- Editor of ' The Megaphone ':
- Lockwood West'
- Smith, a reporter on ' The Megaphone:
- Charles Leno
- Sir Philip Ramon, Foreign Secretary:
- Ivan Samson
- Member for West Brondesbury:
- Maurice Bannister
- Member for Ormskirk:
- Hugh Manning
- Member for Aldgate East:
- Charles Lefeaux
- Prime Minister:
- Charles Mortimer
- Detective Inspector Falmouth:
- Duncan McLntyre
- Assistant Commissioner of ScotlandYard:
- Basil Dignam
- A trustee:
- Edward Forsyth
- Welby a Foreign Editor:
- Hugh Manning
- Jenkins Sir Philip Ramon's Secretary:
- Lionel Stevens
- Ross, of Pinkerton's Agency:
- Alastair Duncan
- Jackson, a policeman:
- Maurice Bannister
- Sergeant Howard:
- Alastair Duncan
- Billy Marks a pickpocket:
- David Kossoff
- Coroner:
- Cyril Gardiner
- Sir Francis Katling:
- Charles Lefeaux
- Carson:
- Edward Forsyth
- Perks, Sir Philip Ramon's butler:
- Frank Atkinson
- An electrician:
- Lionel Stevens
- Storyteller Raf de:
- La Torre
