Danger and discovery await the Doctor back aboard the alien ship, where a modified piece of Time Lord technology awaits his discovery. The Black Guardian is pleased with the Doctor's return and uses Turlough to awaken the ship's undead inhabitants to lead the Doctor to his death. The one uniting factor for all is the unforeseen presence of two Brigadier Lethbridge-Stewarts aboard ship, which could put a sudden end to everyone's plans if they're not kept apart.
Did You Know?
This episode was watched by 7.4 million viewers on its original transmission. See more
For the scene requiring the two time incarnations of Brigadier Lethbridge-Stewart to be seen together in a corridor, a clever effect is used in which two pieces of footage are overlapped together with a split-screen, and with two fades to conceal the switch from a single piece of footage to the split-screen and back again. However, the fades are fairly noticeable (particularly when looking at the elaborate backdrop in this scene), and give the trick away. See more
Do you think I have controlled you merely to prick the flesh of this presumptuous Gallifreyan?