The Doctor and his friends must locate the real murderers and the fourth key before heading off for a final confrontation with the Voord.
Did You Know?
This episode was watched by 6.9 million viewers on its original transmission. See more
An inlay shot against a black background is used to create the appearance of teleportation. This technique is revealed by the appearance of the characters' shadows against a pillar after they have "teleported" - the shadows also reveal the actors scurrying off the set afterwards. See more
I don't believe that man was made to be controlled by machines.Machines can make laws but they cannot preserve justice.Only human beings can do that.