Midnight Menace

Charles Farrell

Briant Gaunt

Margaret Vyner

Mary Stevens

Fritz Kortner

Minister Peters of Grovnia

Danny Green

Socks, American Henchman

Wallace Evennett

Smith, Bowler-hat Henchman

Monti DeLyle

Pierre, Knife-throwing Henchman

Dino Galvani

Tony, Slender Henchman

Arthur Finn

Mac, Newspaper Editor

Laurence Hanray

Sir George, Lead Conspirator

Arthur Gomez

Baron von Kleisch, Delegate

Raymond Lovell

Harris

Evan John

Dr. Marsh

Reynes Barton

Conference President

Terence O'Brien

Secret Agent Fearns

Dennis Val Norton

Vronsky, Peters' Aide

Billy Bray

Banks

Sydney King

Graham Stevens

Andreas Malandrinos

Zadek

Victor Tandy

Groves

Alexander Mackendrick

Story

Roger MacDougall

Story

Sinclair Hill

Director

John E. Morris

Editor