A series of murders had occurred at a local high school and the BAU had been called in to investigate. Hotch and Reid were assigned the roles of substitute teacher and transfer student in order to infiltrate the classroom without raising suspicion.

Hotch stood in front of the class full of disorderly high schoolers eyeing the rambunctious crowd. He cleared his throat like he did at the BAU to get everyone's attention. One of the kids continued to chatter.

"Reid!" Hotch shouted in his mind, careful not to blow their cover.

"Quiet," he ordered instead. "We have a new student."

This announcement effectively triggered a few excited whispers.

"Percival," Hotch ordered. "Stand up and introduce yourself."

Reid coughed in displeasure; he did not approve of his new name.

"Thank you, Mr. Gaylord," he replied. "You all can just call me Perce. I'm eighteen and… I'm from Australia, eh. Aye mate."

Hotch smiled dangerously.

"Ah, yes. Perce and I share a bit of family history. My mother taught ballet to disadvantaged children in Australia, and from what I've heard this young man really had a thing for it. Isn't that right, Perce?"

"Yes. I assisted Mr. Gaylord's mother with the ballet lessons. It was so rewarding working with disadvantaged children. My favorite, in fact, was none other than Mr. Gaylord's son."

"Unfortunately, my son was born with a similar condition to Percival's. But, being a humanitarian, my wife decided she could handle two disadvantaged children. So, she adopted Percival. Class, meet Percival Gaylord."

A few kids snickered while the others eyed Reid apathetically. Reid sank into his seat once more as his face reddened into a dark cherry hue. Now that Percival had been taken care of, Hotch though he should maybe start profiling… er, teaching.

"Okay, everyone. Today we're learning about psychology." Hotch grabbed the seating chart off the teacher's desk and studied it. "Judy, who is known as the father of psychology?"

"Um… Freud?" Judy guessed. "What does this have to do with physics?"

Hotch ignored Reid's hand, which was waving vigorously in the air.

"No," Hotch said, "and unfortunately your physics teacher contracted some disease so he cannot be here and my area of expertise is the mind so that's what we'll be talking about today."

Reid's hand was still waving in the air.

"Yes, Percival?" Hotch sighed.

"I have to go pee!"

"Hold it in!" Hotch snapped. "Okay. We're going to play a game. Raise a hand if I name a trait or habit you exhibit."

The class waited. Reid rocked back and forth in his seat, then placed mismatched socked feet on the table. Alas, Hotch could not resist.

"Who wears mismatched socks?"

Reid's hand shot into the air.

"And who prefers to spend most of his or her time alone?"

Again, Reid raised a hand along with a handful of other students.

Hotch was keeping a tally next to the student's names, and so far Reid was the only one to have raised his hand for every question. He'd even raised his hand for the embarrassing ones, like 'Who has trouble talking to the opposite sex?' That meant that according to the profile Hotch was rapidly compiling, all signs pointed to Reid being the unsub. If only he didn't have such a mentally disturbed young man as a subordinate. Maybe if Reid really had taken therapeutic ballet in Australia he wouldn't be such a pain in the ass. Hotch sighed and looked up from the sheet of paper.

"Okay, who has homicidal fantasies?"

A girl who strongly resembled Prentiss in high school tentatively raised her hand, as well as Reid. Hotch ignored the girl, turning furiously to face his subordinate.

"Really, Percival?"

Reid looked aghast.

"Why don't you just wait for me at home and I'll deal with you later."

As Reid slunk out of the classroom, hopefully to return to the hotel where they were staying, Hotch turned his attention back to the girl. Hotch glanced down at the attendance sheet to find the girl's name.

"Okay, Emily, I have a few que-"

Hotch cut himself off abruptly. Wait, Emily? He glanced back down at the attendance sheet. How had he not recognized one of his agents? And more importantly, why the hell was Prentiss sitting in a high school, dressed like she'd been hit by a bus?

After the unsub had somehow miraculously been found because Hotch is sexy, and after Hotch had collected both his wayward agents and made sure none of his other subordinates were lurking around, he called an emergency midnight meeting at the BAU.

Once everyone had filed in sleepy faced (except for Reid, who was still pouty faced) and Prentiss had removed the black makeup from her face, Hotch informed them of the meeting's purpose.

"During the undercover assignment Reid and I went on, I unfortunately found out some disturbing things. Now, it's not my place to say what they were…" Here, he glanced meaningfully at Reid at Prentiss, "…but I think we could all use some therapy. That being said, I've scheduled group therapy for all of us, tomorrow at nine in the morning."

Morgan groaned.

"I want everyone to attend."

As Hotch and the others began to file out, Morgan cuffed the back of Reid's head.

"Ow! Morgan, it wasn't my fault," he whined. "I told Prentiss it wouldn't be a good idea for her to come…"

"Well, Reid, I'm not happy. No more physics for you."

Reid wailed.