Three Cases of Murder

Elizabeth Sellars

Elizabeth ("You Killed Elizabeth" segment)

Emrys Jones

George Wheeler ("You Killed Elizabeth" segment)

Alan Badel

Owen (segment "Lord Mountdrago") / Mr. X (segment "In the Picture") / Harry (segment "You Killed Elizabeth")

André Morell

Dr. Audlin ("Lord Mountdrago" segment)

Hugh Pryse

Jarvis ("The Picture" segment)

Leueen MacGrath

Woman in the House ("In the Picture" segment)

Eddie Byrne

Snyder ("The Picture" segment)

Helen Cherry

Lady Mountdrago ("Lord Mountdrago" segment)

Eamonn Andrews

Introductions

Zena Marshall

Beautiful Blonde (segment "Lord Mountdrago")

Patrick Macnee

Guard Subaltern (segment "Lord Mountdrago") (uncredited)