TV-14
S2 • E20 Aug 17, 1977 49m5.8
The Moon is discovered to be on a collision course with a huge "dust cloud" within a solar system, possibly containing a planet. Sanderson, the leader of one of Alpha's lunar surface exploration teams (who Helena believes is suffering psychological issues), becomes a mutineer, posing a threat to the entire base by attempting to undermine the Alphan's anti-collision plans.
