Written by Edward Young, this is a horror story set in an isolated house. It would feature a group of university staff, one who was a cripple, trapped in the house during winter. One of the characters would turn out to be a murderer. The story took its name and theme from the poem "Night-Thoughts" by Edward Young, namesake of the story's writer. It was later adapted by Young for Big Finish in February 2006. The adaptation featured the Seventh Doctor and Ace, as well as Big Finish-original companion Hex.