Is Your Sister's Job Responsible for the Escalators at London Underground?

John was working the night shift at Hyde Park Corner in 1978. The temperature suddenly plunged to below freezing, so-called they could see their breath billowing and little puffs of smoke. A grotesque snarling face that had emerged from within the escalator glaring at the two men. John's colleague left the station a few hours later and never returned to work and not station again.