Richard Denning

as Dr. Mark Williams

as Kenneth Bradley

as Governor

as Taylor Henry

as Jonathan Maulle

as Reporter (uncredited)

as Rick

as Hank Scott

as Francis, King of France

as Hugh Harkness

as Constable Thornton

as Salesman (uncredited)

as Dr. Chet Walker

as Lee Kemper

as Frank Brooks

as John Fairbanks

as Dave Markson

as Jack Stoddard

as Self (archive footage)

as Frank Daniel

as Minor Role

as Jerry Russell

as Jack Marshall

as Hal McByrne

as Captain Reid

as Dr. Bruce Merritt

as Capt Allen Danton

as Jeff, Protective Association Henchman

as Commodore

as Rev. Fulton

as 'Dakota' Jack Gaines

as Bill Dixon

as Al Reynolds

as Mr. Weems

as Stacey Wyatt

as Malcolm Bradley

as Fred

as Lt. Phillips

as Sailor (uncredited)

as Jeff

as Jerry North

as Buzz Doyle

as Major Gregory Keen

as Mark Russell

as Dennis Crane

as Lt. Larned

as Dr. Mark Andrews

as Duke Bradley

as Steve Ward

as Charlie Webster

as Don Adams

as Alice's Father

as Silk Patterson

as Buck Hogan

as Col. Patterson

as Mike Lassiter

as Jeff Stewart

as Powder, Henchman

as Rex

as Harry Vay

as Dr. Ira Langston

as Frank Oliver

as Jackra the Magnificent

as Bill Crane

as Tom Davison

as Larry Wilson

as Jim 'Brooklyn' Gannon

as Joe

as Bruce Eaton

as Pilot

as (uncredited)

as Midshipman Jepson

as Police Garage Mechanic

as Johnny Jordan (scenes cut)

as Steve Scott

as Bill Wyatt

as Blaney Lewis

as Chief Investigator Paul Reagan

as Stanley Blair

as Dick Randolph

as Dan Barton

as Lt. Rhody Graves

as Elevator Passenger

as Dr. John Waldron

as Hunk Jordan

as Briggs

as Michael Shayne

as Call Boy (uncredited)

as Peter Wiggins

as Murph

as Sgt. Major Pierre Benet

as Tony Albertini