Doctor Who episode 438: The Deadly Assassin – Part Three (13/11/1976)
The Mind Robber for teenagers, with the Doctor trapped in a dreamscape manufactured by a psychopath manipulating a computer and the Doctor saying things like, ‘I deny this reality.’ As you’d expect from David Maloney working almost entirely on film, this looks great, following through on the nightmarish cliffhanger to Part Two with a series of equally disturbing images drawn from war films, spy thrillers, and generic phobias like clowns and spiders.