Orson Welles as Lord Mountdrago ("Lord Mountdrago" segment)

John Gregson as Edgar Curtain ("You Killed Elizabeth" segment)

Elizabeth Sellars as Elizabeth ("You Killed Elizabeth" segment)

Emrys Jones as George Wheeler ("You Killed Elizabeth" segment)

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

André Morell as Dr. Audlin ("Lord Mountdrago" segment)

Hugh Pryse as Jarvis ("The Picture" segment)

Leueen MacGrath as Woman in the House ("In the Picture" segment)

Eddie Byrne as Snyder ("The Picture" segment)

Helen Cherry as Lady Mountdrago ("Lord Mountdrago" segment)

Eamonn Andrews as Introductions

Zena Marshall as Beautiful Blonde (segment "Lord Mountdrago")

Patrick Macnee as Guard Subaltern (segment "Lord Mountdrago") (uncredited)