Admiral Harriman Nelson

Walter Pidgeon

Acting

Captain Lee Crane

Robert Sterling

Acting

Lieutenant Cathy Conners

Barbara Eden

Acting

Comm. Lucius Emery

Peter Lorre

Acting

Dr. Susan Hiller

Joan Fontaine

Acting

Dr. Miguel Alvares

Michael Ansara

Acting

Lieutenant Chip Romano

Frankie Avalon

Acting

Dr. Jamieson

Regis Toomey

Acting

Vice Admiral B.J. Crawford

John Litel

Acting

Congressman Llewellyn Parker

Howard McNear

Acting

Dr. Zucco

Henry Daniell

Acting

Sparks

Robert Easton

Acting

CPO Mack Gleason

Charles Tannen

Acting

Seaman Jimmy 'Red' Smith

Mark Slade

Acting

Seaman Kowski

Del Monroe

Acting

Seaman George Young

Jonathan Gilmore

Acting

Cookie

Anthony Monaco

Writing

Crew Member

Skip Ward

Acting

Crew Member

Michael Ford

Acting

Crew Member (Uncredited)

William Herrin

Acting

Crew Member (Uncredited)

Robert Buckingham

Acting

Crew Member (Uncredited)

Richard Adams

Acting

Crew Member (Uncredited)

Jimmy Murphy

Acting

Lieutenant Hodges (Uncredited)

George Diestel

Acting

Dr. Newmar (Uncredited)

Larry Gray

Acting

Ned Thompson (Uncredited)

David McLean

Acting

Officer (Uncredited)

Edward Rickard

Acting

Seaview Pilot (Uncredited)

Charles Dierkop

Acting

UN Committee Chairman (Uncredited)

Kendrick Huxham

Acting

UN Commentator (Uncredited)

Art Baker

Acting

Guard (Uncredited)

Rodger Terry

Acting

Guard (Uncredited)

Brad Brown

Acting

Delegate (Uncredited)

Raoul Freeman

Acting

Delegate (Uncredited)

Al Bain

Acting

Delegate (Uncredited)

Harry Baum

Acting

Delegate (Uncredited)

Benjie Bancroft

Acting

Delegate (Uncredited)

Michael Cirillo

Acting

Delegate (Uncredited)

Harry Denny

Acting

Delegate (Uncredited)

John Giovanni

Acting

Delegate (Uncredited)

Bhupesh Guha

Acting

Delegate (Uncredited)

Esther Ying Lee

Acting

Delegate (Uncredited)

Robert Locke Lorraine

Acting

Delegate (Uncredited)

George Nardelli

Acting

Delegate (Uncredited)

Paul Power

Acting

Delegate (Uncredited)

Paul Ravel

Acting

Delegate (Uncredited)

Scott Seaton

Acting

Delegate (Uncredited)

Leslie Sketchley

Acting

Delegate (Uncredited)

Ray Spiker

Acting

Delegate (Uncredited)

Hal Taggart

Acting

Delegate (Uncredited)

Robert Strong

Acting

Crew Member (uncredited)

Ron Nyman

Acting