Cast & Crew
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Roddy McDowallCornelius - Kim HunterDr. Zira
- Bradford DillmanDr. Lewis Dixon
- Natalie TrundyDr. Stephanie Branton
- Eric BraedenDr. Otto Hasslein
- William WindomThe President
- Sal MineoDr. Milo
- Albert SalmiE-1
- Jason EversE-2
- John RandolphChairman of the President's Committee of Inquiry
- Harry LauterGeneral Winthrop
- M. Emmet WalshGeneral Winthrop's Aide
- Roy GlennLawyer
- Peter ForsterCardinal
- Norman BurtonArmy Officer
- Bill WoodsonNaval Officer
- Tom LowellOrderly
- Gene WhittingtonMarine Captain
- Donald ElsonCurator
- Army ArcherdReferee
- Bill BondsTV Newscaster
- James BaconGeneral Faulkner
- Ricardo MontalbánArmando
- John AldermanMarine Corporal (uncredited)
- Stephen RobertsGeneral Brody (uncredited)
- Don TaylorDirector
- Arthur P. JacobsProducer
- Paul DehnWriter