Reparto (15)
Martin LandauCommander John Koenig
Barbara BainDoctor Helena Russell
Barry MorseProfessor Victor Bergman
Nick TateCaptain Alan Carter
Roy DotriceCommissioner Gerald Simmons
Prentis HancockPaul Morrow
Zienia MertonSandra Benes
Anthony ValentineMale Alien
Isla BlairFemale Alien
Philip MadocCommander Anton Gorski
Lon SattonBenjamin Ouma
Eric CarteEddie Collins
Clifton JonesDavid Kano
Patrick AllenLuna Commission Chairman
Christopher MatthewsMain Mission Operator