Mark stared at the back of a row of houses they thundered past, convinced he’d seen the flash of a fast-moving figure. There it was again, visible just for a fraction of a second between two buildings, a sudden blur of color and speed. Then, as he was trying to find the first again, a second appeared. It was a woman of average height and slender build. She athletically scrambled to the top of a pile of rubble, then leaped over onto a parched grass verge, losing her footing momentarily before steadying herself, digging in, and increasing her pace. She sprinted alongside the convoy, wild hair flowing in the breeze behind her like a mane, almost managing to match the speed of the five vehicles. Mark jumped in his seat as a lump of concrete hit the truck door, hurled from the other side of the road and missing the window he was looking through by just a few inches. Startled, he glanced into the side mirror and saw that they were being chased. His view was limited, but he could see at least ten figures in the road behind the convoy, running after them. They were never going to catch up, but maybe they sensed the vehicles would be stopping soon. They kept running with a dogged persistence, the gap between them increasing but their speed and intent undiminished. He looked anxiously from side to side and saw even more of them moving through the shadows toward the road. Their frantic, unpredictable movements made it hard to estimate how many of them there were. It looked like there were hundreds.

Marshall remembered the place they were heading to from before the war, a modern office building in the middle of an out-of-town business park; as part of his job in his former life he’d made deliveries to a depot nearby on numerous occasions.