Robert Ayres

as (uncredited)

as Adm. Felix Hillebrand

as (uncredited)

as General Courts

(1 episode) as Chairman

(1 episode) as Judge Webster Thayer

as Angelo Di Marco

as American Official

as Col. Robert Thompson

(1 episode) as John Allardyce

(1 episode) as Clinton

(36 episodes) as Walter Allen

(1 episode) as Hamilton

as Capt. Ben Richards

as John Adams

(1 episode) as Richards

(2 episodes)

(1 episode) as Chairman

as Maj. Arthur Peuchen

(1 episode)

as Dr. Brian Marlowe

as Colonel-in-chief

as Insp. Andrews

as Leroy Crane

(1 episode) as Wyatt

as Tex

as Sr. Dean, superior de la Embajada de los Estados Unidos

as Ned Ellison

as Ship's Captain Watford

as Bob Stevens

as James Glasson / David Trevelyan

as Andrew J. Jackson

as Larry Conn

as Frank Brown

as Mark Sherwin (The Amnesiac)

as Max

as Walter

as The American

as American Brigadier

as Arthur J. Buckman