She rolled her eyes. "Did you drink a big glass of stupid juice tonight?"

"I'm smart enough to know you're lying!"

"Go back to sleep," she said. "Go back to the other children."

He regarded her for a while, and then obeyed.

Or rather, seemed to obey. He went back into the crawl space where they slept these days, but immediately crept out the back way and clambered up crates, drums, low walls, high walls, and finally got up onto a low-hanging roof. He walked to the edge in time to see Poke slip out of the alley into the street. She was going somewhere. To meet someone.

Bean slid down a pipe onto a rainbarrel, and scurried along Korte Hoog Straat after her. He tried to be quiet, but she wasn't trying, and there were other noises of the city, so she never heard his footfalls. He clung to the shadows of walls, but didn't dodge around too much. It was pretty straightforward, following her – she only turned twice. Headed for the river. Meeting someone.

Bean had two guesses. It was either Ulysses or Achilles. Who else did she know, that wasn't already asleep in the nest? But then, why meet either of them? To plead with Ulysses for Achilles' life? To heroically offer herself in his place? Or to try to persuade Achilles to come back and face down Ulysses instead of hiding? No, these were all things that Bean might have thought of doing – but Poke didn't think that far ahead.

Poke stopped in the middle of an open space on the dock at Scheepmakershaven and looked around. Then she saw what she was looking for. Bean strained to see. Someone waiting in a deep shadow. Bean climbed up on a big packing crate, trying to get a better view. He heard the two voices – both children – but he couldn't make out what they were saying. Whoever it was, he was taller than Poke. But that could be either Achilles or Ulysses.

The boy wrapped his arms around Poke and kissed her.

This was really weird. Bean had seen grownups do that plenty of times, but what would kids do it for? Poke was nine years old. Of course there were whores that age, but everybody knew that the johns who bought them were perverts.

Bean had to get closer, to hear what they were saying. He dropped down the back of the packing crate and slowly walked into the shadow of a kiosk. They, as if to oblige him, turned to face him; in the deep shadow he was invisible, at least if he kept still. He couldn't see them any better than they could see him, but he could hear snatches of their conversation now.

"You promised," Poke was saying. The guy mumbled in return.

A boat passing on the river scanned a spotlight across the riverside and showed the face of the boy Poke was with. It was Achilles.

Bean didn't want to see any more. To think he had once believed Achilles would someday kill Poke. This thing between girls and boys was something he just didn't get. In the midst of hate, this happens. Just when Bean was beginning to make sense of the world.

He slipped away and ran up Posthoornstraat.

But he did not head back to their nest in the crawlspace, not yet. For even though he had all the answers, his heart was still jumping; something is wrong, it was saying to him, something is wrong.

And then he remembered that Poke wasn't the only one hiding something from him. Achilles had also been lying. Hiding something. Some plan. Was it just this meeting with Poke? Then why all this business about hiding from Ulysses? To take Poke as his girl, he didn't have to hide to do that. He could do that right out in the open. Some bullies did that, the older ones. They usually didn't take nine-year-olds, though. Was that what Achilles was hiding?

"You promised," Poke said to Achilles there on the dock.

What did Achilles promise? That was why Poke came to him – to pay him for his promise. But what could Achilles be promising her that he wasn't already giving her as part of his family? Achilles didn't have anything.

So he must have been promising not to do something. Not to kill her? Then that would be too stupid even for Poke, to go off alone with Achilles.

Not to kill me, thought Bean. That's the promise. Not to kill me.

Only I'm not the one in danger, or not the most danger. I might have said to kill him, but Poke was the one who knocked him down, who stood over him. That picture must still be in Achilles' mind, all the time he must remember it, must dream about it, him lying on the ground, a nine-year-old girl standing over him with a cinderblock, threatening to kill him. A cripple like him, somehow he had made it into the ranks of the bullies. So he was tough – but always mocked by the boys with two good legs, the lowest-status bully. And the lowest moment of his life had to be then, when a nine-year-old girl knocked him down and a bunch of little kids stood over him.

Poke, he blames you most. You're the one he has to smash in order to wipe out the agony of that memory.

Now it was clear. Everything Achilles had said today was a lie. He wasn't hiding from Ulysses. He would face Ulysses down – probably still would, tomorrow. But when he faced Ulysses, Achilles would have a much bigger grievance. You killed Poke! He would scream the accusation. Ulysses would look so stupid and weak, denying it after all the bragging he'd done about how he'd get even. He might even admit to killing her, just for the brag of it. And then Achilles would strike at Ulysses and nobody would blame him for killing the boy. It wouldn't be mere self-defense, it would be defense of his family.

Achilles was just too damn smart. And patient. Waiting to kill Poke until there was somebody else who could be blamed for it.

Bean ran back to warn her. As fast as his little legs would move, the longest strides he could take. He ran forever.

There was nobody there on the dock where Poke had met Achilles.

Bean looked around helplessly. He thought of calling out, but that would be stupid. Just because it was Poke that Achilles hated most didn't mean that he had forgiven Bean, even if he did let Bean give him bread.

Or maybe I've gone crazy over nothing. He was hugging her, wasn't he? She came willingly, didn't she? There are things between boys and girls that I just don't understand. Achilles is a provider, a protector, not a murderer. It's my mind that works that way, my mind that thinks of killing someone who is helpless, just because he might pose a danger later. Achilles is the good one. I'm the bad one, the criminal.

Achilles is the one who knows how to love. I'm the one who doesn't.

Bean walked to the edge of the dock and looked across the channel. The water was covered with a low-flowing mist. On the far bank, the lights of Boompjes Straat twinkled like Sinterklaas Day. The waves lapped like tiny kisses against the pilings.

He looked down into the river at his feet. Something was bobbing in the water, bumped up against the wharf.

Bean looked at it for a while, uncomprehending. But then he understood that he had known all along what it was, he just didn't want to believe it. It was Poke. She was dead. It was just as Bean had feared. Everybody on the street would believe that Ulysses was guilty of the murder, even if nothing could be proved. Bean had been right about everything. Whatever it was that passed between boys and girls, it didn't have the power to block hatred, vengeance for humiliation.

And as Bean stood there, looking down into the water, he realized: I either have to tell what happened, right now, this minute, to everybody, or I have to decide never to tell anybody, because if Achilles gets any hint that I saw what I saw tonight, he'll kill me and not give it a second thought. Achilles would simply say: Ulysses strikes again. Then he can pretend to be avenging two deaths, not one, when he kills Ulysses.

No, all Bean could do was keep silence. Pretend that he hadn't seen Poke's body floating in the river, her upturned face clearly recognizable in the moonlight.