Saisons
Casting
Margaret Neale
June Challis
Denys Peek
Robert Duncan
Ralph Nossek
Professor Ramsay
Trevor Bannister
Peter Barry
Brandon Brady
Brian Barclay
Celia Bannerman
Diana Winters
William Abney
Ian Murray
Julian Somers
Sir John Chandos
Terence Donovan
Captain Wade
Arthur White
Keeler
Jeffry Wickham
Dr. Baranov
Lindsay Campbell
Dr. Rickover