The Doctor battles the assassin inside the matrix dreamscape, while the Master tries to bring about his death in the real world.
Did You Know?
Part of the disturbing nature of the drowning scene came from the fact that Tom Baker
suffers from aquaphobia and thus was experiencing a real fear of drowning during filming. Baker was reportedly so worried of the cliffhanger scaring children that he visited a random family to watch the episode with them and hear their responses. See more
When the hunter is looking at his map, his bandoleer of cartridges is shown in close-up. The shells clearly have no primers, meaning that (in real life, though perhaps not in the virtual reality the scenario takes place in) the shells would be inert and therefore useless. See more
We have him now, but beware. The Doctor is never more dangerous than when the odds are against him.