Season 15, 1977 (4 parts)
Here’s a weird one – a virus that transmits through eye lightning gives people a silver fuzz on their face and hands and they become mind-controlled by the viral “nucleus” which looks like a prawn. Even the Doctor becomes infected but Leela is immune because she’s all instinct, whereas the virus needs intelligence. Seems like a backhanded compliment to me.
At a space hospital, we are introduced to K-9 the robot dog and the Doctor and Leela are cloned, and their clones shrink down Fantastic Voyage style to take care of the prawn monster inside the original Doctor. But the prawn uses the same size-changing technology to embiggen itself and now the invisible enemy is very very visible. And makes bad decisions. The professor is a fun character. The story starts out strong but kind of fizzles out. Clever use of some cool-looking visors to hide infection and the Doctor’s ridiculously long scarf is used as a tether in this episode.
Next up: Image of the Fendahl