The Doctor tracks the missing scientists to Irongron's castle, where Linx is using them to repair his spaceship and construct advanced weapons for Irongron.
Quest roles:
Alan Rowe(Garif), Donald Pelmear(Professor Rubeish), June Brown(Eleanor), Jeremy Bulloch(Hal), David Daker(Irongron), John J. Carney(Bloodaxe), Kevin Lindsay(Styre / The Marshal)