Walter Pidgeon
Admiral Harriman Nelson
Acting
Robert Sterling
Captain Lee Crane
Acting
Barbara Eden
Lieutenant Cathy Conners
Acting
Peter Lorre
Comm. Lucius Emery
Acting
Joan Fontaine
Dr. Susan Hiller
Acting
Michael Ansara
Dr. Miguel Alvares
Acting
Frankie Avalon
Lieutenant Chip Romano
Acting
Regis Toomey
Dr. Jamieson
Acting
John Litel
Vice Admiral B.J. Crawford
Acting
Howard McNear
Congressman Llewellyn Parker
Acting
Henry Daniell
Dr. Zucco
Acting
Robert Easton
Sparks
Acting
Charles Tannen
CPO Mack Gleason
Acting
Mark Slade
Seaman Jimmy 'Red' Smith
Acting
Del Monroe
Seaman Kowski
Acting
Jonathan Gilmore
Seaman George Young
Acting
Anthony Monaco
Cookie
Writing
Skip Ward
Crew Member
Acting
Michael Ford
Crew Member
Acting
William Herrin
Crew Member (Uncredited)
Acting
Robert Buckingham
Crew Member (Uncredited)
Acting
Richard Adams
Crew Member (Uncredited)
Acting
Jimmy Murphy
Crew Member (Uncredited)
Acting
George Diestel
Lieutenant Hodges (Uncredited)
Acting
Larry Gray
Dr. Newmar (Uncredited)
Acting
David McLean
Ned Thompson (Uncredited)
Acting
Edward Rickard
Officer (Uncredited)
Acting
Charles Dierkop
Seaview Pilot (Uncredited)
Acting
Kendrick Huxham
UN Committee Chairman (Uncredited)
Acting
Art Baker
UN Commentator (Uncredited)
Acting
Rodger Terry
Guard (Uncredited)
Acting
Brad Brown
Guard (Uncredited)
Acting
Raoul Freeman
Delegate (Uncredited)
Acting
Al Bain
Delegate (Uncredited)
Acting
Harry Baum
Delegate (Uncredited)
Acting
Benjie Bancroft
Delegate (Uncredited)
Acting
Michael Cirillo
Delegate (Uncredited)
Acting
Harry Denny
Delegate (Uncredited)
Acting
John Giovanni
Delegate (Uncredited)
Acting
Bhupesh Guha
Delegate (Uncredited)
Acting
Esther Ying Lee
Delegate (Uncredited)
Acting
Robert Locke Lorraine
Delegate (Uncredited)
Acting
George Nardelli
Delegate (Uncredited)
Acting
Paul Power
Delegate (Uncredited)
Acting
Paul Ravel
Delegate (Uncredited)
Acting
Scott Seaton
Delegate (Uncredited)
Acting
Leslie Sketchley
Delegate (Uncredited)
Acting
Ray Spiker
Delegate (Uncredited)
Acting
Hal Taggart
Delegate (Uncredited)
Acting
Robert Strong
Delegate (Uncredited)
Acting
Ron Nyman
Crew Member (uncredited)
Acting