Directed by Samaji Nonagase. Written by Masahiro Yamada. Airdate Jan. 30, 1966.

Here’s a change of scenery, shifting from urban Tokyo to the desolate wastes of Antarctica. There’s another change, which is that Jun is the only member of the regular or semi-regular cast to appear. Without Yuriko and Ippei around to lighten the mood, this is the first episode to completely bypass humor — appropriate for a bleak, tense story set in one of the most hostile environments on Earth.