- Margaret Rutherford
- Miss Jane Marple
- Ron Moody
- H. Driffold Cosgood
- Charles 'Bud' Tingwell
- Inspector Craddock
- Andrew Cruickshank
- Justice Crosby
- Megs Jenkins
- Mrs. Gladys Thomas
- Ralph Michael
- Ralph Summers
- James Bolam
- Bill Hanson
- Stringer Davis
- Jim Stringer
- Francesca Annis
- Sheila Upward
- Pauline Jameson
- Maureen Summers
- Annette Kerr
- Dorothy
- Alison Seebohm
- Eva McGonigall
- Windsor Davies
- Sergeant Brick
- Neil Stacy
- Arthur
- Maurice Good
- George Rowton
- Stella Tanner
- Mrs. Florrie Harris
- Dennis Price
- Harris Tumbrill
- Terry Scott
- Police Constable Wells
- John Adams
- Constable
- Edwin Apps
- Police Constable Carrying Tea Tray
- Jack Armstrong
- Jury Member
- Sydney Arnold
- Vicar
- Joe Beckett
- Man in Court
- Tony Castleton
- Jury Member
- Billy Cornelius
- Jury Member
- Fred Davis
- Constable
- Reggie de Beer
- Jury Member
- John Dunbar
- Jury Foreman
- Eric Francis
- Stage Manager
- Garard Green
- Doctor
- Lucy Griffiths
- Miss Rusty
- Cameron Hall
- Johnson
- Bill Hibbert
- Constable
- Arthur Howell
- Police Constable in Theatre Box
- Gerry Judge
- Police Constable
- Ross Parker
- Mr. Strawbridge
- Susan Richards
- Cleaning Lady
- Michael Segal
- Stagehand
- Alecia St Leger
- Jury Member
- John Wilder
- Chief Constable
