He turned away abruptly and took up his piercing cry again. There's no-one closer, more like family, than old enemies.

The platform shook, there was a blast of approaching air, and a train roared into the station and slowed to a stop—a long shining silver bullet of a train, with no windows anywhere. The carriages were solid tubes of steel, with only the heavily reinforced doors standing out against their shimmering perfection. The doors hissed open, and people poured in and out. I was ready to take Joanna by the arm again, but it wasn't necessary. She strode into the carriage before her without hesitating, her head held high. I followed her in and sat down beside her.

The carriage was almost empty, for which I was grateful. I've never liked being crowded. All kinds of things can hide in a crowd. The man sitting opposite

us was reading a Russian newspaper with great concentration. The date below the masthead was from a week in the future. Further down the immaculately clean carriage sat a young woman kitted out in full Punk regalia, right down to the multiple face piercings and fierce green mohawk rising up from her shaved head. She was reading an oversized leather-bound Holy Bible. The pages appeared to be blank, but the white on white of her unblinking eyes marked her as a graduate of the Deep School, and I knew that for her and her alone, the pages were full of awful wisdom.

Joanna was looking around the carriage, and I tried to see it through her eyes. The complete lack of windows made it feel more like a cell than a conveyance, and the strong smell of disinfectant reminded me irresistibly of a dentist's surgery. There was no map anywhere. People who took this train knew where they were going.

"Why aren't there any windows?" said Joanna, after a while.