Inferno

(Series 7, Episodes 19-25)

Summary: The Earth sicks up green goo that turns anyone who touches it into slathering zombie, the Doctor takes a trip to an Orwellian parallel universe of bad wigs and missing facial hair and everyone says penetration a lot.  In an episode all about a very big drill.

Watch it because: Parallel Eyepatch Brigadier is a gloriously shouty fascist.

Original Air Date: 9 May – 20 June 1970.

Doctor: Jon Pertwee.

Companions: Liz Shaw (Caroline John).

Writer: Don Houghton.

Director: Douglas Camfield.

Producer: Barry Letts.

Available on DVD? Yes.