Avalanche
- Episode aired Oct 27, 1967
- TV-PG
- 26m
When the Mysterons threaten to destroy key links in the Frost Line Outer Space Defence System, Scarlet and Green investigate the mysterious deaths of the personnel at Red Deer Base.When the Mysterons threaten to destroy key links in the Frost Line Outer Space Defence System, Scarlet and Green investigate the mysterious deaths of the personnel at Red Deer Base.When the Mysterons threaten to destroy key links in the Frost Line Outer Space Defence System, Scarlet and Green investigate the mysterious deaths of the personnel at Red Deer Base.