The class drifted off, the girls holding their stomachs, the guys pushing each other around and acting like doofuses.

Grover and I were about to follow when Mr. Brunner said, "Mr. Jackson."

I knew that was coming.

I told Grover to keep going. Then I turned toward Mr. Brunner. "Sir?"

Mr. Brunner had this look that wouldn't let you go— intense brown eyes that could've been a thousand years old and had seen everything.

"You must learn the answer to my question," Mr. Brunner told me.

"About the Titans?"

"About real life. And how your studies apply to it."

"Oh."

"What you learn from me," he said, "is vitally important. I expect you to treat it as such. I will accept only the best from you, Percy Jackson."

I wanted to get angry, this guy pushed me so hard.

I mean, sure, it was kind of cool on tournament days, when he dressed up in a suit of Roman armor and shouted: "What ho! " and challenged us, sword-point against chalk, to run to the board and name every Greek and Roman person who had ever lived, and their mother, and what god they worshipped. But Mr. Brunner expected me to be as good as everybody else, despite the fact that I have dyslexia and attention deficit disorder and I had never made above a C— in my life. No—he didn't expect me to be as good; he expected me to be better. And I just couldn't learn all those names and facts, much less spell them correctly.

I mumbled something about trying harder, while Mr. Brunner took one long sad look at the stele, like he'd been at this girl's funeral.

He told me to go outside and eat my lunch.

The class gathered on the front steps of the museum, where we could watch the foot traffic along Fifth Avenue.

Overhead, a huge storm was brewing, with clouds blacker than I'd ever seen over the city. I figured maybe it was global warming or something, because the weather all across New York state had been weird since Christmas. We'd had massive snow storms, flooding, wildfires from lightning strikes. I wouldn't have been surprised if this was a hurricane blowing in.

Nobody else seemed to notice. Some of the guys were pelting pigeons with Lunchables crackers. Nancy Bobofit was trying to pickpocket something from a lady's purse, and, of course, Mrs. Dodds wasn't seeing a thing.

Grover and I sat on the edge of the fountain, away from the others. We thought that maybe if we did that, everybody wouldn't know we were from that school—the school for loser freaks who couldn't make it elsewhere.

"Detention?" Grover asked.

"Nah," I said. "Not from Brunner. I just wish he'd lay off me sometimes. I mean—I'm not a genius."

Grover didn't say anything for a while. Then, when I thought he was going to give me some deep philosophical comment to make me feel better, he said, "Can I have your apple?"

I didn't have much of an appetite, so I let him take it.

I watched the stream of cabs going down Fifth Avenue, and thought about my mom's apartment, only a little ways uptown from where we sat. I hadn't seen her since Christmas. I wanted so bad to jump in a taxi and head home. She'd hug me and be glad to see me, but she'd be disappointed, too. She'd send me right back to Yancy, remind me that I had to try harder, even if this was my sixth school in six years and I was probably going to be kicked out again. I wouldn't be able to stand that sad look she'd give me.

Mr. Brunner parked his wheelchair at the base of the handicapped ramp. He ate celery while he read a paperback novel. A red umbrella stuck up from the back of his chair, making it look like a motorized cafe table.

I was about to unwrap my sandwich when Nancy Bobofit appeared in front of me with her ugly friends—I guess she'd gotten tired of stealing from the tourists—and dumped her half-eaten lunch in Grover's lap.

"Oops." She grinned at me with her crooked teeth. Her freckles were orange, as if somebody had spray-painted her face with liquid Cheetos.

I tried to stay cool. The school counselor had told me a million times, "Count to ten, get control of your temper." But I was so mad my mind went blank. A wave roared in my ears.

I don't remember touching her, but the next thing I knew, Nancy was sitting on her butt in the fountain, screaming, "Percy pushed me!"

Mrs. Dodds materialized next to us.

Some of the kids were whispering: "Did you see—"

"— the water—"

"— like it grabbed her—"

I didn't know what they were talking about. All I knew was that I was in trouble again.

As soon as Mrs. Dodds was sure poor little Nancy was okay, promising to get her a new shirt at the museum gift shop, etc., etc., Mrs. Dodds turned on me. There was a triumphant fire in her eyes, as if I'd done something she'd been waiting for all semester. "Now, honey—"

"I know," I grumbled. "A month erasing workbooks."

That wasn't the right thing to say.

"Come with me," Mrs. Dodds said.

"Wait!" Grover yelped. "It was me. I pushed her."

I stared at him, stunned. I couldn't believe he was trying to cover for me. Mrs. Dodds scared Grover to death.

She glared at him so hard his whiskery chin trembled.

"I don't think so, Mr. Underwood," she said.

"But—"

"You—will—stay—here."

Grover looked at me desperately.

"It's okay, man," I told him. "Thanks for trying."

"Honey," Mrs. Dodds barked at me. "Now."

Nancy Bobofit smirked.

I gave her my deluxe I'll-kill-you-later stare. Then I turned to face Mrs. Dodds, but she wasn't there. She was standing at the museum entrance, way at the top of the steps, gesturing impatiently at me to come on.

How'd she get there so fast?

I have moments like that a lot, when my brain falls asleep or something, and the next thing I know I've missed something, as if a puzzle piece fell out of the universe and left me staring at the blank place behind it. The school counselor told me this was part of the ADHD, my brain misinterpreting things.

I wasn't so sure.

I went after Mrs. Dodds.

Halfway up the steps, I glanced back at Grover. He was looking pale, cutting his eyes between me and Mr. Brunner, like he wanted Mr. Brunner to notice what was going on, but Mr. Brunner was absorbed in his novel.

I looked back up. Mrs. Dodds had disappeared again. She was now inside the building, at the end of the entrance hall.

Okay, I thought. She's going to make me buy a new shirt for Nancy at the gift shop.

But apparently that wasn't the plan.

I followed her deeper into the museum. When I finally caught up to her, we were back in the Greek and Roman section.

Except for us, the gallery was empty.

Mrs. Dodds stood with her arms crossed in front of a big marble frieze of the Greek gods. She was making this weird noise in her throat, like growling.

Even without the noise, I would've been nervous. It's weird being alone with a teacher, especially Mrs. Dodds. Something about the way she looked at the frieze, as if she wanted to pulverize it…

"You've been giving us problems, honey," she said.

I did the safe thing. I said, "Yes, ma'am."

She tugged on the cuffs of her leather jacket. "Did you really think you would get away with it?"

The look in her eyes was beyond mad. It was evil.

She's a teacher, I thought nervously. It's not like she's going to hurt me.

I said, "I'll—I'll try harder, ma'am."

Thunder shook the building.

"We are not fools, Percy Jackson," Mrs. Dodds said. "It was only a matter of time before we found you out. Confess, and you will suffer less pain."

I didn't know what she was talking about.

All I could think of was that the teachers must've found the illegal stash of candy I'd been selling out of my dorm room. Or maybe they'd realized I got my essay on Tom Sawyer from the Internet without ever reading the book and now they were going to take away my grade. Or worse, they were going to make me read the book.