Master Spy
Voltar- Stephen MurrayBoris Turganev
June ThorburnLeila
Alan WheatleyPaul Skelton
John CarsonRichard Colman- John BownJohn Baxter
Jack WatsonCaptain Foster
Ernest ClarkDr. Pembury
Peter GilmoreTom Masters
Marne MaitlandDr. Asafu
Ellen PollockDr. Morrell
Hugh MortonSir Gilbert Saunders
Basil DignamRichard Horton- Victor BeaumontPetrov
Hamilton DyceAirport Controller