Tom Helmore

Sir Charles Reddington

John Warwick (segment “The Caterpillar”)

Sir Halsey Hopewell

British Ambassador

Anthony Bridewell

Gordon Moreland

Hugh Palgrave

Gavin Elster

Zachary Wilde

Stowe Devlin

Mr. Loughran

Jim Wardman

Miles Farnham

Lamont Cranston

Courtney Craig

Harold McCormick

George Manson

Detective Superintendent Tom Reid

Crane Weymouth

Matisson

Norrie Lorfield

Michael Pemberton

Captain Benoit

Harry Miller

Colonel Anderson (uncredited)

Stephen

Alfred Jerome

Peter Dewin

Ronnie Gordon

Ronnie Helmore