At night, when the last train rumbles to the depot and the piston-draught dies down, the night shift keeps its silent hours; cleaning, repairing, watching CCTV screens of empty platforms, shutting down electrics with a key; trackwalking near Stockwell, where an engineer holds a Tilly lamp - he died in 1950 - and cowled monks prowl the Jubilee. The old lady at Monument & Bank vanishes through padlocked lattice gates. There’s a faceless blonde at Becontree; and in Kennington Loop, the clunk of doors being slammed along an empty train. From the wartime crush at Bethnal Green, one hundred and seventy three screams still echo in the ticket hall. At King’s Cross, the heat’s still there from a flashover, fuelled by sweet wrappers grease, dust, wooden escalators, rat - and human - hair. Heading downwards, here are four cleanskins, rucksacks bulging with terror, intent on detonating hatred in the tunnels, where I saw the shade of a young girl, seventeen, just arrived from Euston, on the Northern Line, reading other passengers’ newspapers the day John Lennon died. She often appears on a Friday night, swinging her weekend bag, running through Victoria. Sometimes I see her saying goodbye to a young man in a winter coat as he exchanges all his gold for darkness. Judi Sutherland First published in The Ship Owner's House published by Vane Women Press