"You guys think that because of what this girl wrote in her diary that she is innocent?" Detective Bell raised his eyebrows. "Ignoring the part about burning down the school, ignoring the fact that the death message was sent from her phone and ignoring the fact that she ran the second she saw us coming for her?"

"I know the way she's been acting is extremely incriminating, but I think she's going through a lot, and I have a hard time seeing someone so sensitive plotting out a murder for a grade she doesn't care about."

"A grade she says she doesn't care about." Upon seeing the protest on Joan's face, Detective Bell said, "Look, I'm not saying you're wrong, but the evidence isn't in your favor. She could have written this diary just to mess with us. I'm sorry, but we can't call off the search because of a diary entry." The detective turned away. Joan turned to Sherlock.

"You agree with me, don't you?" Sherlock stared at his feet.

"I must say, this is a difficult case. I agree that the diary entry throws more doubt on the subject than what we had before, but by no means does it prove anything. However, if you feel strongly about this," he paused for a slight bow, "I will do my best to support you, as I have found your instincts of the past fairly insightful."

"So you don't agree with me."

"The behavior of Amy Wong alarms me. Normal, innocent people don't run like that unless they have something to run from. Quite clearly she had planned how to get away beforehand." Joan remained silent. "Come on, the fire escape? The jump out a two-story window? All this proves is that Amy Wong is an incredibly complex person, a criminal mastermind, or both."

Joan crossed her arms and nodded. She knew that both Detective Bell and Sherlock had a point. But she knew the crucible of school better than both of them. She was a doctor, for God's sake. School could drive to self-destruction. But the jump to murder required more immersion in school affairs than Amy Wong's diary showed. Sherlock began to walk towards the hall. She followed him.

"Well, who was it then?"

"What?"

"If not Amy Wong, who was it?"

"Well, the only motivation we have is that Jeremy Davis was going to be valedictorian. So someone in reach of that." Sherlock nodded. Joan stopped walking.

"Oh my God. Sherlock." Sherlock stopped and turned, an eyebrow raised. "What if the person in third was the one who did it? They killed Jeremy Davis and framed Amy Wong so that they would be first in line."

"That's a possibility."

"Well, who was in third?"

"Let me check. Detective Bell forwarded me the list." Sherlock raised his eyebrows. "Norma Ranik."

"But, that's Amy's roommate." Joan began running down the hall to the elevator. Sherlock trotted after her. "See? It's perfect. She could have just used the phone when Amy was asleep or something."

They arrived in Amy Wong's dorm. A blonde girl was stretched out on the bed. When they opened the door, she jumped.

"You guys scared me to death. Are you the police?"

"We're with the NYPD." Joan said.

"Thank God."

"Are you Norma Ranik?" The girl frowned. From the look on Joan's face she could tell that something was wrong.

"Yeah, I am. Why?"

"We are now considering you a suspect in this case." Sherlock clasped his hands behind him and stretched his neck. The girl sat up.

"You must be kidding. I thought you'd already decided it was Amy."

"We have discovered further evidence that sheds doubt upon the case against Ms. Wong." Sherlock said.

"Well do you have any evidence at all that it was me?"

"Not at the moment. But you have motive and opportunity, ingredients in the suspect formula." She stared at them.

"You're whack. I don't know what kind of idiots they're hiring over there."

"Hey, I am a doctor, and he is the best detective in England. Don't talk to us like that."

"I would like to remind you Ms. Ranik that your fate is in our hands."

"You can't touch me. I didn't do it." She lay back down. "Just read Amy's diary."

Joan looked at Sherlock. He frowned.

"We've read her diary."

"Obviously not. I have it." Joan watched as Norma dug through a pile of dirty clothes and produced a small blue notebook. She held it out to Sherlock.

"Why would you have Amy's diary?" Joan narrowed her eyes. Norma shrugged.

"Needed notebook paper. She wasn't in." As Sherlock opened the notebook Joan said,

"We have a diary of Amy's. It's not that one."

"Well that one's the one with the good stuff in it." Joan rose an eyebrow. "So I need a lot of notebook paper, so what? At least I don't kill anyone." Norma paused. "If I did set this up I'd be a genius."

" , was Ms. Wong a good roommate?"

"Yeah, except for the part about her being a psychopathic anxiety machine with OCD."

"Would you say that she was moody?" Sherlock tapped the blue notebook against his hand. Norma laughed.

"Yeah you could say that. I asked her if she was bipolar once and she threw a book at me. Why?"

"Thank you Ms. Ranik. Good-bye." Sherlock walked out, still holding the diary.

"Aren't you going to tell me?" Norma called after them.

"Sherlock, why-" Sherlock handed the new diary to Joan. Joan's eyes scanned it. She felt a chill run through her. Looking up at Sherlock, she said,

"She has MPD."

"Or schizophrenia. I'm sorry, Joan." On the page, written in a scrawl were the words, "The Davis boy is too far ahead. He must die. It is a risk. I must take it. I must be valedictorian. I must."