Leaving the cookies to cool, I headed upstairs to my room. At my dresser, I pushed aside a pile of old sketches and travel magazines, spying my bottle of ibuprofen tucked behind them.

After swallowing two pills down with a gulp of water, I tossed my hair up in a messy ponytail, leaving a few wispy blond strands hanging in my face. I peered at myself in the mirror and curled my upper lip. Making things beautiful on paper with a pencil in my hand was easy for me. Making things beautiful in real life wasn’t.

It was just past noon when I loaded the cooled cookies onto a plate. On my way down to the lab, I grabbed the new tube of tennis balls I’d bought for Cas. I swore that boy had ADD, though his unwavering attention when food was present indicated he had some focus skills.

When I entered, my gaze went to Sam’s room first. He sat at his desk, the full bow of his mouth pressed tightly in a line of concentration. He didn’t even bother to look up from the book in front of him. Sometimes, the Sam I spent time with at night was completely different from the careful and serious Sam I saw when other people were present. Did I act differently depending on who was around? I doubted Sam would even care if I did.

Dad was at his computer, typing away. He gave a half wave without taking his eyes off the screen. Cas, his blond hair sticking up in messy tufts, moved to the front of his room when I approached. He pressed his face against the glass and puffed out his cheeks like a blowfish. When he pulled back and smirked, his cheeks dimpled in that innocent-but-mischievous way that only five-year-olds can pull off. Well, five-year-olds and Cas.

Despite their altered rate of aging, caused by the treatments, Cas looked the youngest. With his dimples and round cheeks, he had a classic baby face. And he knew exactly how to use it to his advantage.

“Pumpkin?” He nodded at the cookies.

“Of course.”

“Anna Banana, I love you.”

I laughed and unlocked the hatch—a small opening in the brick wall between his room and Trev’s—and slid in four cookies, along with the tennis balls. I hit the button so he could open the hatch on his side.

“Oh, sweet Jesus,” he said, then inhaled an entire cookie.

“You are the black hole of food.”

“I need my protein.” He patted his hard stomach. The gesture made a solid thwack, thwack sound. Despite all the food he crammed down his throat, he never gained an ounce.

“I don’t think two eggs in a batch of cookies counts as protein.”

He flicked the lid off the tube of tennis balls, unfazed. “It totally counts.”

“Did you finish that model car I brought you last week?” I looked past him to his desk, which I could hardly make out beneath the pile of half-finished projects and junk. I spied one lone wheel on top of a sports magazine. “Should I take that mess as a no?”

He screwed up his face and made a pfffffttt sound. “I have plenty of time.”

I went to Trev’s room next. He’d been doing yoga when I first came in, but now stood at the wall, waiting for me. My gaze met his eyes and I smiled. His were a unique shade of brown, like firelight, warm and liquid and inviting. When I drew him, I used colors I rarely used on anyone else. Which was maybe why I drew him the most. While I felt like I knew Trev the best, his heritage was the hardest to pinpoint. Through the sheen of yoga-induced sweat, his earthy olive complexion hinted at a background different from those of the others. I’d been unable to find anything concrete in his files, but I thought he might be Native American, and maybe Italian, too.

“You want some?” I asked, showing him the plate.

He slicked back his dark hair with a quick swipe of his hand. “You know I live for Wednesdays.”

I gave him four cookies, and in return he slipped something into the hatch for me. When I reached inside I felt the soft spine of a paperback. Letters from the Earth, by Mark Twain. It was a library book I’d checked out the week before. My membership was used more for Trev’s reading habits than it was for mine. I bought him his own copies when I could, all of which were lined up on the shelves above his desk. Alphabetized, of course.

Inside the front cover, I found a note.

Did you come down last night?

What did you say to Sam?

I looked behind me to see if Dad had noticed. He hadn’t. I’d divulged a lot of secrets to Trev. If I had a best friend here, he was it. He was the only one who knew how I felt about Sam.

I quickly grabbed a pen from my desk and scribbled a response.

Yes. Why? Did he say something?

I pressed the note to the glass and Trev read. He wrote down an answer and held it up for me.

He’s been acting strange. He snapped at Nick early

this morning, after Nick said something about you

and cookies. And he’s been sleeping less and less lately.

Something’s going on with him.

My next note read,

I don’t know. I’ll keep an eye on him.

“I’m sure you will,” Trev said with a knowing smile.

Smirking, I crumpled the paper and ignored the comment. “Any requests for the next book?”

“Something on Abraham Lincoln?”

“I’ll see what I can do.”

I started for Sam’s room. He tended to eat pretty well, so cookies were never his thing, but I slowed my pace just the same. He still sat at his desk, back hunched, reading his book. Technology in the Twenty-First Century. I’d ordered that one special for him.

There were a few books on the shelves above him, mostly reference manuals. Sam’s room was neat, tidy, and bare.

He looked up as I passed. “Hey,” he said.

I smiled. “Hey.”

And that was it.

Nick’s room was last. He and I had never gotten along. As a matter of fact, he once told me he couldn’t stand the sight of my face. As far as I knew, I hadn’t done anything to offend him, and if I had, Nick wasn’t the kind of person to hold back.

I slid a couple of cookies into the hatch. “Do you have any requests? I’ll probably go to the store later this week. A new Car & Driver? How are you on shampoo?” He liked this special stuff that was made from avocados and shea butter. I had to order it from a website that sold only organic goods, using my own money. Not that he cared.

When he didn’t answer, I muttered, “Maybe a stone to sharpen your horns?”

He called out as I headed back to my desk. “How about a fifth of vodka?”

Ignoring him, I dropped into the desk chair, munching on a cookie with a high chocolate content. Like my mother, I wouldn’t turn down extra sweets. At least that’s one thing I had in common with her. That, and our hazel eyes, according to Dad. With my free hand, I held the previous day’s physical chart in front of me and snuck glances at the boys. Cookies in hand, Nick kicked back in his bed, watching a TV show about wolves. Sam was still reading. Trev stood at the front of his room, chatting with Cas about the difference between regular chocolate and white chocolate, their conversation not at all hindered by the wall between them.

Dad wouldn’t tell me what the program tested for, despite my repeated questioning. When I’d first found the lab, it was all I could think about. What were four boys doing in our basement? Where were their parents? How long had they been down there? Dad knew exactly how much information to give to feed my curiosity and keep me quiet. I knew about the Branch, of course. But even though I knew who ran the program, I still didn’t know why.

Dad said I should trust him, that he knew what he was doing, and so did the Branch. It was for the greater good.

It was our job to observe, record data, and make necessary changes to the treatments. Dad may have been a little neglectful in the parenting department, but he was a good man, and if he trusted the Branch and our role in the program, then so did I.

I thought the Branch was most likely funded by the government. Dad was obsessed with wars and foreign conflicts, so it made sense. My latest theory was that the boys were being made into supersoldiers. The world could use more heroes.

As Nick finished his cookies, I prepared my tray for the blood draw. I double-checked each supply. Three vials. One new needle. Rubber strap. Band-Aids. Alcohol swabs. Everything was there.

I only had to go into Nick’s room every other Wednesday, but each time it left me rattled. I’d rather draw blood from a mountain lion. If Nick was being made into a hero, the program had taken a wrong turn with him.

I tried to shake the feeling off as I went to his room. “You ready?”

“Does it matter if I am or not?”

I was tempted to say something equally snotty in response, but I held back. I just wanted to get this over with.

Dad had three rules about the lab that were to be followed without question. Rule number one: Do not go into the boys’ rooms when they are awake. Rule number two: Turn on the sleeping gas only once the subject is safely lying down. Rule number three: Wait four minutes for the gas to kick in.

The boys knew the rules, too.

But Nick hated rules.

“Will you lie down, please?” I asked. He sneered at me. “Lie down, Nick.” The sneer turned into a snarl, but he finally did as I asked.

Behind me, Dad’s cell phone rang. “I need to take this. You’ll be okay if I head upstairs?”

I refused to tell Dad I was scared of Nick; I didn’t want him to think I couldn’t hack it in the lab. So I nodded and said, “Sure.”

Phone at his ear, Dad hurried out.

With Nick finally in place on his bed, I scooped up my supply tray. “Here it comes,” I warned, right before I hit the Cell #4 button on the control panel. The twin vents in Nick’s ceiling scraped open and white smoke hissed out.

He managed to say “This shit gives me a headache” before the gas hit him and his eyes slipped closed. The ever-present tension in his long, sinewy body eased away.

I looked at the stopwatch hanging from a lanyard around my neck. Four minutes was too long for most people to hold their breath. Dad said he was ninety percent sure the boys were stable at this point, and that they probably wouldn’t pose any sort of danger to me, but ten percent was too much of a risk for him.

When four minutes had passed, I hit the button to reverse the vents, and the gas was sucked back out. I punched in the entrance code to Nick’s room and half of the wall pushed forward and slid aside. The acrid scent of the gas still lingered as I placed my tray on the floor and took a seat next to Nick on the bed.

It was odd seeing him so relaxed. It almost made him look vulnerable. The dark scowl was gone, softening the sharp angles of his face. His black hair curled around his ears. If he hadn’t been so infuriating when he was awake, I might have even thought he was handsome.

It didn’t take me long to fill the required three vials once I’d located a good vein in the crook of his elbow. I was about to leave when something caught my eye below the hem of his shirt, where a sliver of bare skin was exposed.

I checked my stopwatch. One minute, thirty seconds remained before the effects of the gas would start to wear off. I set the tray back down and lifted the corner of his shirt.

A scar discolored his skin, the wound old and white now. But the shape of it made me pause. It almost looked like an E. I thought of Sam’s scar, the R on his chest. How could I not have noticed Nick’s?

Because you weren’t ever looking at him.

“You’re running out of time,” Trev called from two cells over.

Nick’s eyes fluttered. His fingers flexed at his sides.

My heart lurched. I snatched up the tray and started for the door as Nick reached for me. His fingers grazed my forearm, but he was still sluggish from the gas and missed. I slammed the control button and the wall slid back into place as he rushed forward. His blue eyes met mine and the scowl returned. I tried to act unafraid, even though I was anything but. Nick had the bluest eyes I’d ever seen, the color of the sky where night meets day. A blue that made him seem more mature, more dangerous, more everything.