Death’s Other Dominion. Season 1, Episode 5. First broadcast Thursday 2 October 1975.

This month, we’re faced with an alarming metaphysical choice: eternal life among a bunch of absurdly hot models in Hugh Hefner’s second least favourite Swiss chalet, or a normal lifespan cleaning up the corridors of Moonbase Alpha after its latest nuclear catastrophe. Victor, Helena, Bob and Alan all want to make the obviously correct (if basic) choice, but their fun is inevitably spoiled by miserable old John Koenig and the second law of thermodynamics.