Reparto (16)
Margaret NealeJune ChallisDenys PeekRobert Duncan
Ralph NossekProfessor Ramsay
Trevor BannisterPeter BarryBrandon BradyBrian Barclay
Celia BannermanDiana WintersWilliam AbneyIan Murray
Julian SomersSir John ChandosTerence DonovanCaptain WadeArthur WhiteKeeler
Jeffry WickhamDr. BaranovLindsay CampbellDr. RickoverMilton JohnsHazizBernard KayPaul BazaineRobert O'NeilPresident McConeDmitri MakaroffPremier Yeremenko