Doctor Who episode 278: Inferno – Episode 7 (20/6/1970)
‘Nothing like a nice happy ending is there?’ After the apocalyptic scenes last week (which surely merited more of a recap at the top of this episode), this is a race against time to avert a disaster in our world. The idea that the Doctor has seen this all before, and is fighting time itself is compelling: ‘The pattern can be changed.’ In practice, naturally no-one really believes his Cassandra-like warnings, especially after he takes a spanner to the computer, and it’s largely thanks to a devolved Stahlman choosing to emerge from the drill head that convinces everyone to stop the clock.