SINOPSIS
The world is shocked by the appearance of two talking chimpanzees, who arrived mysteriously in a U.S. spacecraft. They become the toast of society; but one man believes them to be a threat to the human race.
- Roddy McDowallCornelius
- Kim HunterZira
- Bradford DillmanDr. Lewis Dixon
- Natalie TrundyDr. Stephanie Branton
- Eric BraedenDr. Otto Hasslein
- William WindomThe President
- Sal MineoMilo
- Albert SalmiE-1
- Jason EversE-2
- John RandolphChairman
- Harry LauterGeneral Winthrop
- M. Emmet WalshAide
- Roy GlennLawyer
- Peter ForsterCardinal
- Norman BurtonArmy Officer
- William WoodsonNaval Officer
- Tom LowellOrderly
- Gene WhittingtonMarine Captain
- Donald ElsonCurator
- Bill BondsTV Newscaster
- Army ArcherdReferee
- James BaconGeneral Faulkner
- Ricardo MontalbanArmando
- John AldermanMarine Corporal
- Alan BaxterGeneral