WE TOOKto the rooftops. There were no helicopters nearby, and the shadows of the gloomy afternoon masked us from general view, so it seemed safer to carry on up high, where we could make good time.

Moving carefully but quickly, we aimed for areas far beyond the chaos behind us, where we could hole up until night. For fifteen minutes we leapt and slid from one rooftop to another, unseen by anyone, getting further and further away from the humans who were hunting us.

Finally, we came to a crumbling old silo a building in which grain was once stored. A spiral staircase still ran up the outside, though the lowest section had rotted and crumbled away. Leaping on to the upper half of the stairs from a roof, we climbed to the top, kicked down the locked door and let ourselves in.

Closing the door, we edged further into the silo along a narrow ledge, until we reached a semi-circular platform, where we lay down. There were holes and cracks in the roof overhead and the dim light was strong enough for us to see by.

"Do you think we'll be … safe here?" Harkat asked, lowering his mask. Streams of green sweat were flooding the scars and stitches of his grey face.

"Yes," Mr Crepsley said confidently. "They will have to organize a complete search. They dare leave no stone unturned. That will slow them down. It will be morning or later before they make it this far across the city." The vampire shut his eyes and massaged his eyelids. Even doused in suntan lotion, his skin had turned a dark pink colour.