Petra rolled away. "Is the bone broken?" he asked. "I got a friend of mine out of a mine accident that way, once." He let the slab fall again. (And for a moment he stopped, thinking, I knew what to do. I wasn't clumsy, I knew....)

Petra rubbed her ankle. "No," she said. "I just got my ankle wedged in that crevice, and the concrete fell on top." She stood up, now, picking up the notebook. "Ow," she said. "That hurts."

Arkor held her arm. "Can you walk?"

"With difficulty," Petra said, taking another step and clamping her teeth.

"Alter says to stand on your other foot and shake your injured one around to get the circulation back," Arkor told her.

Petra gritted teeth, and stepped again. "A little better," she said. "I'm scared. This really hurts. This may be a body that looks like mine, but it hurts, and it hurts like mine." Suddenly she looked off into the city. "Oh hell," she said. "He's in there. Let's go."

They went forward again, this time under the road. The sidewalks, deserted and graying, slipped past. They passed a shopping section; teeth of broken glass gaped in the frames of store windows. Above, two roads veered and crossed, making a black, extended swastika on a patch of white clouds.

Then a sudden rumbling.

Silence.

They stopped.