Doctor Who episode 447: The Robots of Death – Part Four (19/2/1977)
This even manages to largely avoid the persistent failing of the Hinchliffe era: half-baked endings. Partly that’s because after the steady pace of the first three episodes, this is pretty much non-stop action and peril. While Uvanov and Toos hold the bridge, the Doctor, Leela and D84 go to confront Taren Capel, and in a fairly relentless series of lashed-up bombs, laser probes and robot deactivation devices the robot revolution is defeated. It’s not the tidiest climax, and it abandons the conventions of the detective novel (which would have seen the Doctor gather the survivors in the lounge to unmask Taren Capel). However, everyone gets to play a part, Uvanov is revealed not to be the heartless manslaughterer Poul led us to believe, Toos gets to deduce that SV7 has been “turned”, and D84 becomes a hero.