Poke kept her eyes open all the time. The younger children were supposed to be on watch, too, and sometimes they could be quite observant, but they just didn't notice all the things they needed to notice, and that meant that Poke could only depend on herself to see danger.

There was plenty of danger to watch for. The cops, for instance. They didn't show up often, but when they did, they seemed especially bent on clearing the streets of children. They would flail about them with their magnetic whips, landing cruel stinging blows on even the smallest children, haranguing them as vermin, thieves, pestilence, a plague on the fair city of Rotterdam. It was Poke's job to notice when a disturbance in the distance suggested that the cops might be running a sweep. Then she would give the alarm whistle and the little ones would rush to their hiding places till the danger was past.

But the cops didn't come by that often. The real danger was much more immediate -- big kids. Poke, at age nine, was the matriarch of her little crew (not that any of them knew for sure that she was a girl), but that cut no ice with the eleven- and twelve- and thirteen-year-old boys and girls who bullied their way around the streets. The adult-size beggars and thieves and whores of the street paid no attention to the little kids except to kick them out of the way. But the older children, who were among the kicked, turned around and preyed on the younger ones. Any time Poke's crew found something to eat -- especially if they located a dependable source of garbage or an easy mark for a coin or a bit of food -- they had to watch jealously and hide their winnings, for the bullies liked nothing better than to take away whatever scraps of food the little ones might have. Stealing from younger children was much safer than stealing from shops or passersby. And they enjoyed it, Poke could see that. They liked how the little kids cowered and obeyed and whimpered and gave them whatever they demanded.