The six gathered at the windows to look at the latest Wonderground station as the curtains peeled back to reveal a platform jammed full of bustling Lowdowners, squashed together shoulder to shoulder. The space was tiled exquisitely in copper and bronze squares and lit by cast iron gas lanterns that were dotted along the length of the platform. The lanterns cast a soft creamy glow that reflected in the tiled walls. Matching benches were positioned between each lantern and were filled with more impatient travellers. The people stepped back together as steam escaped the stopping engine and swept like a rippling blanket across the feet and ankles of the crowd. Suddenly, each lantern blinked out in quick succession and the entire station was smothered in complete darkness. The six held their breath. After an eternity, each gas lantern burst back into life, relighting with a harsh crimson throbbing glow. An invisible alarm sounded relentlessly from somewhere, reverberating through the space and shocking the passengers into statues. Nobody moved.