Ηθοποιοί επεισοδίου
Jon PertweeThe Doctor
Nicholas CourtneyThe Brigadier
Caroline JohnLiz Shaw
John LeveneSergeant Benton
Olaf PooleyProfessor Stahlman
Christopher BenjaminSir Keith Gold
Derek NewarkGreg Sutton
★
Sheila DunnPetra Williams
David SimeonPrivate Latimer
★
Derek WarePrivate Wyatt
★
Walter RandallHarry Slocum
★
Ian FairbairnBromley