Ηθοποιοί επεισοδίου
Jon PertweeThe Doctor
Nicholas CourtneyThe Brigadier
Caroline JohnLiz Shaw
Christopher BenjaminSir Keith Gold
Derek NewarkGreg Sutton
★
Ian FairbairnBromley
John LevenePlatoon Under Leader Benton
Olaf PooleyDirector Stahlman
★
Sheila DunnDr. Petra Williams
★
Keith JamesPatterson
★
Dave CarterPrimord
★
Pat GormanPrimord
★
Philip RyanPrimord
★
Peter ThompsonPrimord