Harry was still angry when he burst into the common room. It was the first time his fellow Gryffindors saw him angry, and some of them looked scared.

"Are you okay, Harry?" Neville asked.

"What happened?" Ron said, looking concerned.

Harry couldn't get any words out. Ron took his arm and led him out of the common room.

"Get Fred and George," Harry managed to say.

Ron went back in and came out with Fred and George. He then led the way to the room of requirement. He stopped near the room and waited for Harry to open it. Fred and George looked around, impressed. They noticed the punching bags, tackling dummies, as well as some couches. Harry immediately started punching one of the punching bags.

"Who are you beating up today?" Ron asked.

"Snape," Harry muttered, continuing to punch.

"Does he feel it?" Fred asked, curiously.

"No," Harry said. "It's just a way of releasing my anger."

After a few minutes, he stopped punching and was able to sit down and talk.
"Remus has an appointment tomorrow," he began.

"Moony has an appointment?" George asked.

"With the moo" Fred started to say.

"Don't say it!" Harry gasped. "Nobody's allowed to know or he'll lose his job!"

"What isn't anyone allowed to know?" Ron asked.

"Remus has a secret," Harry tried to explain. "He didn't do anything wrong, and it's not his fault, but if people find out, he'll lose his job. Snape is subbing tomorrow. He figured out Remus's secret and plans to tell everyone."

"That's a shame," George said. "He's a great teacher."

"I'm assuming you called us up here for a reason," Fred added. "You must want our help keeping a dark arts creature to teach us to defend ourselves against him."

"You're as bad as Snape!" Harry told him.

"I was joking," Fred said. "I think it's Remus is a cool teacher. I would never give away his secret."

"We need to stop Snape," Harry said. "What do you have last period tomorrow?"

"We have a free period," Fred and George said the same time.

"Perfect," Harry said. "If I lend you my cloak, could you create chaos?"

"Of course," Fred and George said.

"Plan A is to create chaos, not let Snape talk, and not get caught. Plan B only happens if you get caught," Harry said. "If you get caught, pretend that Sirius asked you to teach me how to use my cloak for pranks instead of as a security blanket. Snape will be so busy making fun of me, he'll forget about Remus."

"I don't like plan B," Ron said. "Snape could be very mean."

"Do you have a better idea?" Harry asked.

"Why is it better for Snape to attack you than to attack Remus?" Ron wanted to know.

"Snape is angry at Remus because of Neville's boggart," Harry explained. "I was the one who suggested to Remus that the boggart wear a dress."

"I didn't hear you say anything," Ron said.

"It was during the summer," Harry explained. "You guys went to Egypt and deserted me, so I had no choice but to do school work. When I read about boggarts, I told Remus that Neville's boggart will look like Snape and suggested putting him in a dress. Remus, of course, got carried away and went on about Neville's grandmother's clothes."

"That's why you were laughing when Snape said he doesn't want to watch," Ron realized.

"Exactly," Harry said. "And I don't want to be the one to cause Remus to lose his job."

The boys agreed to try to stick to plan A and to only use plan B if they get caught.

The next day, Harry was running late thanks to Oliver's constant quiddich talk. Fred and George followed behind him under the cloak, as Harry breezed into class ten minutes late.

"Sorry, I'm late, Professor," Harry said, taking a seat.

"This lesson began ten minutes ago, Potter, so I think we'll make it ten points from Gryffindor."

"As I was saying before Potter interrupted, Professor Lupin"

Snape's words were suddenly cut off as a filibuster firecracker exploded. Snape waved his wand in the direction that the spell came from. His own spell bounced off the wall.

"Who did that?" Snape asked.

Nobody answered.

"Accio cloak," Snape tried, but nothing happened.

Snape fired hexes at random spots, trying to catch his invisible intruder. The first through hexes bounced off the walls. Eventually, one hex hit its mark. Snape walked over and lifted the invisibility cloak. George stood there frozen. Fred was trying to pull him away.

"Weasley, and Weasley," Snape said. "I will lift the freezing hex so you could explain what you are doing here."

"I'm sorry, Professor," they both said the same time. "Sirius asked us to teach Harry how to use his cloak for pranks instead of as a security blanket."

"Ten points from Gryffindor for each of you," Snape said. "Now get out of the class or you will get detention."

"Can I have my dad's cloak, Professor?" Harry asked politely.

"You have a security blanket, Potter?" Snape sneered.

"It's my dad's cloak," Harry said again. "Can I have it back now?"

"Your dad would be embarrassed to have such a sissy for a son," Snape told him. "He used the cloak for pranks, not as a blankie."

"I wouldn't know," Harry said. "My dad died when I was a baby. This cloak is the only thing I have that belongs to him. Can I have it back now?"

"Baby Potter wants his dad's cloak," Snape teased. "He needs to cry with it in bed."

"Can I have the cloak, Professor?" Harry asked again, wondering how long Snape was willing to play along.

"Give him his dad's cloak," Dean Thomas said boldly, and there was a murmur of agreement from the rest of the class. "He doesn't sleep with it. He keeps it in his trunk at the foot of his bed. We all saw him use it."

"So you are doing pranks, Potter?" Snape asked, glaring at Harry.

"He used it when Malfoy did a leg locker curse on Neville," Hermione said quickly. "He said he was going to talk to Malfoy. Fred and George wanted to join him. Harry put on the cloak and said 'Good luck finding me.'"

"And what did you do to Draco?" Snape asked.

"I told him how I feel about pulling pranks," Harry said. "What's the big deal? Can I have my dad's cloak?"

"Your dad is dead, Potter," Snape said. "Holding on to his cloak as a security blanket won't help anything. Besides, your dad would be ashamed of you if he were still alive."

"I wouldn't know, Professor," Harry said. "I don't know what I would be like if my parents lived. Now, can I have my dad's cloak?"

"Why can't you give the cloak?" Parvati asked suddenly. "What do you think he will do with it?"

"Cry like a baby over his dead father," Snape said, smiling cruelly.

"I have never seen him cry," Ron said loudly, "even when he told me exact details of his memory from his parents' murder. You just took his cloak to be mean to him."

"We just wasted half of class," Professor Snape yelled at them. "Now sit down and be quiet so we can learn about"

"Please, Professor," Harry begged. "Can I please have my dad's cloak?"

"Very touching," Snape said. "You are so loyal to your late father who you don't even know."

"That's not my fault, Professor," Harry said.

"Did you hear me ask you to sit down and be quiet?" Snape asked, glaring at him.

"Yes," Harry mumbled.

"Yes, Sir," Snape corrected.

"You don't need to call me sir, Professor," Harry said.

Seamus grinned at him. Hermione gasped.

"Detention, Potter," Snape said. "I don't take cheek from Daddy's baby. I will see you tonight after dinner."

"Yes, Professor," Harry said. "May I have my dad's cloak?"

"There are only ten minutes left to class thanks to your outbursts," Snape reprimanded. "Now sit down and be quiet."

Harry felt Snape staring in his eyes and tried to close his mind.

"Stop that, Potter," Snape said, "Or your class will still get the homework assignment I was planning on giving despite not learning the material."

Harry stopped resisting. He watched Voldermort murder his mum in his head, and felt tears streaming down his cheeks.

"Pathetic, Potter," Snape said. "Class dismissed. Potter, stay."

Harry watched his class leave, most people looking at him sympathetically.

"Here's your cloak," Snape said handing it over. "You earned two detentions. You could either have one tonight and one tomorrow, or have both of them back to back tonight. The first one is from last night's behavior. You will be scrubbing caldrons without magic. I'm still deciding what the second one will be."

"I'll do them both tonight," Harry said. "I have a quiddich game tomorrow."

Harry was lost in thought as he walked out the door, dreading his detention.