Unwind

and she points Risa out to the cop. The cop instantly pulls out his radio to inform the other officers.

'Connor, we're in trouble.'

'I know—I see it too.'

'Wait!' screams Lev, still far away, but getting closer.

Risa looks for Hannah, but she's vanished into the crowd of kids in the parking lot.

Connor looks at Risa, fear overwhelming the fury in his eyes. 'Run.'

This time Risa doesn't hesitate. She runs with him, breaking toward the street just as a fire truck bursts onto the scene, siren blaring. The truck stops right in their path. There's nowhere to run. The fire alarm had mercifully been pulled at the perfect time, and it's gotten them this far, but the commotion is fading. Kids are milling instead of moving, and cops in every direction zero in on the two of them.

What they need is a fresh commotion. Something even worse than a fire alarm.

The answer comes even before Risa can formulate the entire idea in her mind. She speaks without even knowing what she's about to say.

'Start clapping!'

'What?'

'Start clapping. Trust me!'

A single nod from Connor makes it clear that he gets it, and he begins bringing his hands together, slowly at first, then more and more quickly. She does the same, both of them applauding as if they were at a concert cheering for their favorite band.

And beside them, a student drops his backpack and stares at them in utter horror.

'Clappers!' he screams.

In an instant the word is out.

ClappersClappersClappers . . .

It echoes in the kids around them. In an instant it reaches critical mass, and the entire crowd is in lull-blown panic.

'Clappers!' everyone screams, and the crowd becomes a stampede. Kids bolt, but no one is sure where to go. All they know is that they must get away from the school as quickly as possible.

Risa and Connor continue to clap, their hands red from the force of their duet of applause. With the mob racing in blind terror, the cops can't get to them.

Lev has vanished, trampled by the panicked mob, and everything is made worse by the fire siren, which blares like it's sounding out the end of the world.

They stop clapping and join the stampede, becoming a part of the running crowd.

That's when someone comes up beside them. It's Hannah. Her plans of driving them off campus are gone, so she quickly hands Risa the baby.

'There's an antique shop on Fleming Street,' she tells them. 'Ask for Sonia.

She can help you.'

'We're not clappers,' is all Risa can think to say.

'I know you're not. Good luck.'

There's no time to thank her. In a moment the wild crowd pulls them apart, taking Hannah in a different direction. Risa stumbles and realizes they're in the middle of the street. Traffic has come to a halt as hundreds of kids race in a mad frenzy to escape the terrorists, wherever they are. The baby in Risa's arms bawls, but its cries are nothing compared to the screams of the mob. In a moment they are across the street, and gone with the crowd.

18. Lev

This is the true meaning of alone: Lev Calder beneath the trampling feet of a stampeding crowd.

'Risa! Connor! Help!'

He should never have called out their names, but it's too late to change that now. They ran from him when he called. They didn't wait—they ran. They hate him. They know what he did. Now hundreds of feet race over Lev like he's not there. His hand is stomped on, a boot comes down on his chest, and a kid springboards off of him to get greater speed.

Clappers. They're all screaming about clappers, just because he pulled the stupid alarm.

He has to catch up with Risa and Connor. He has to explain, to tell them that he's sorry—that he was wrong to turn them in and that he pulled the alarm to help them escape. He has to make them understand. They are his only friends now. They were. But not anymore. He's ruined everything.

Finally, the stampede thins out enough for Lev to pick himself up. A knee of his jeans is torn. He tastes blood—he must have bitten his tongue. He tries to assess the situation. Most of the mob is off campus, in the street and beyond, disappearing down side streets. Only stragglers are left.

'Don't just stand there,' says a kid hurrying past. 'There are clappers on the roof!'

'No,' says another kid, 'I heard they're in the cafeteria.'

All around Lev, the bewildered cops pace with a false determination in their stride, as if they know exactly where to go, only to turn around and pace with the same determination in another direction.

Connor and Risa have left him.

He realizes that if he doesn't leave now with the last of the stragglers, he'll draw the attention of the police.

He runs away, feeling more helpless than a storked baby. He doesn't know who to blame for this: Pastor Dan for cutting him loose? Himself for betraying the only two kids willing to help him? Or should he blame God for allowing his life to reach this bitter moment? You can be anyone you want to be now, Pastor Dan had said. But right now, Lev feels like no one.

This is the true meaning of alone: Levi Jedediah Calder suddenly realizing he no longer exists.

19. Connor

The antique shop is in an older part of town. Trees arch over the street, their branches cut into unnatural angular patterns by the profiles of passing trucks.

The street is full of yellow and brown leaves, but enough diehards still cling to the branches to make a shady canopy.

The baby is inconsolable, and Connor wants to complain to Risa about it, but knows that he can't. If it hadn't been for him, the baby wouldn't even be part of the equation.

There aren't all that many people on the street, but there are enough. Mostly it's kids from the high school just knocking around, probably spreading more rumors about clappers trying to detonate themselves.

'I hear they're anarchists.'

'I hear it's some weird religion.'

'I hear they just do it to do it.'

The threat of clappers is so effective because no one knows what they really stand for.

'That was smart back there,' Connor tells Risa, as they approach the antique shop. 'Pretending to be clappers, I mean. I would never have thought of that.'

'You thought quickly enough to take out that Juvey-cop the other day with his own tranq gun.'

Connor grins. 'I go by instinct, you go by brains. I guess we make a pretty decent team.'

'Yeah. And we're a bit less dysfunctional without Lev.'

At the mention of Lev, Connor feels a spike of anger. He rubs his sore arm where Lev bit him—but what Lev