Disclaimer: I don't own Harry Potter or Batman.

Joker

I swear, I made sure I sent that letter to Mae, but she could be late, or stuck at school, or maybe she chose to ignore me and is going to let me rot in Arkham until she gets out of school for winter. I began laughing my head off. I just realized that my seventeen year old sister went to a school for magic, and hated using it! I knew she was coming. She always came. Wait that was a lie. Muse was a muse to anyone, a siren. She lured people with her guitar, and killed 'em before they had realized what had hit them. Not only that, it was a double meaning. Amuseing isn't it?

"What are you laughing at, clown!" one of the guards yelled. They kept me in the interrogation room until they decided to transport me to the mad house. They figured out that I could easily break out of a holding cell. Finally. I thought all of GCPD were idiots. They don't let me have visitors…except for Batsy. Harley must be worried out in Arkham.

"The fact that you are all going to die!" I laughed and fell out of the chair.

"The clown is insane. No one is going to break him out this time. Rumor is his sister abandoned him." I smirked and laughed harder at their antics.

"The city is hoping that the siren is dead, or in jail somewhere," the second guard said.

I went up to the door. "Don't. Say. Bull. About. My. Sister!" I hissed. Neither of them shied away. There was a wall separating us, and when I was behind bars, they thought that they were above me. Ha! Like that will ever be true. They live in Gotham for Pete's sake!

"Muse has been gone for over three months. And if a criminal in this town goes missing, and they aren't in Arkham, then it means that they are dead. Just like anybody else."

An explosion shook the building. I laughed harder.

"OR they went to an exclusive boarding school!" I laughed even harder if that was even possible.

Harry

"Hey, Ron?" I asked. We were in the library doing homework.

"Yeah?" He didn't look up from his essay.

"Do you think that it was weird that Hermione took off right after the prophet said that they caught that insane murderer?"

"I don't know. I don't really keep up on things like that," Ron said.

"Over the summer, the events happening in Gotham were horrible. Almost as bad as the terror Lord Voldemort is bringing now. Half way through June, there was an explosion at the Asylum in the city, and some of the worst and most insane criminals escaped."

"So?" Ron became interested.

"The summer before The Joker and The Muse were both put away for killing many people in politics, cops, and others in law enforcement, as well as innocent bystanders. The Muse somehow escaped after she was incarcerated, like a week before term started, and she kept her head low until Christmas, when she killed half the security at the Asylum to free her brother. They went on a reign of terror to regain control of the criminals and put fear back into the hearts of citizens. Muse vanished a few weeks later, and wasn't seen again until the summer. The Joker had been captured again, then blew up one wing of the Asylum to free himself. How he did it was still unknown, but the Muse showed up again shortly after that. They hadn't been completely off the radar, but they didn't cause enough trouble to be easily caught. Until a few months ago."

"What happened?"

"The Joker began to go to large events, and set off bombs, rob banks, rain laughing gas strong enough to kill over the city. The Joker killed hundreds, and wasn't caught. Until yesterday. His sister vanished again, two weeks before term this time."

"And?"

"We never see Hermione over the summer holidays. Ever. Except for a few weeks before at Diagon Alley."

"What? You think Hermione is the Muse, don't you?"

"I never said that, but I am saying that it is a possibility."

"Harry, I think that you aren't thinking straight."

"Think about it, Ron, Hermione's parents always look terrified when they are shopping for school supplies. Like they would die if they said anything."

"Do you have a picture of the Muse?" Ron asked.

"Yes," I pulled on out of my bag. The Muse was laughing, up at the sky as she played her guitar, there was a burning building behind her.

"See, not Hermione. The Muse had a scar from her forehead, cutting off the corner of her right eye down to her cheek, and a half permanent smile. Her hair is straight, and purple. There is a black stripe across her eyes, and Hermione never wears make up."

"I guess you are right. I just think that it is really weird that the day the Joker is caught, that Hermione's brother, Jack, was arrested. I don't remember her ever mentioning a brother before yesterday."

"I'll ask Ginny if she knows anything. Maybe we are missing something about Hermione."

"Alright."

We didn't see Hermione for three months. She had gotten permission from Professor Dumbledore to bail out her brother, but didn't return from her trip.

The next day, there was an article in the prophet, right from the newspaper in Gotham. The headline said:

THE MUSE RETURNED TO GOTHAM! THE JOKER ESCAPES WITH HIS SISTER'S ASSISTANCE!

Muse

I entered the police station quietly, and made my way through to the holding cells without getting caught. I swear, people are so oblivious sometimes. A girl with a guitar on her back in red purple and green. They couldn't see my face, I had my hood up again.

"Girl! Are you looking for something?" One officer asked.

"Just visiting my brother. Do you know where the holding cells are?" I asked the officer politely, without meeting his eyes…letting him even seeing my face.

"Yes, they are just past that door, but you need a pass, and officer to go there with you."

"Yeah, about that, I don't think so." I released a knife into my hand, and lunged at him, and slit his throat so fast, he doesn't even know that he is dead. "I can't have screaming a symphony yet." I walked to the door, only to find it locked.

I reached to see if the officer had the keys. No such luck. "Where is that small explosion bomb?" I asked myself as I looked through the inside of my jacket. "Here we go!" I pulled the pin, rolled it to the door, and waited for the explosion. Oh how I love explosions.

All the officers and cops cam a running when it went off. I pulled out a gun and began firing at the officers that came my way. "Out of bullets. Damn." I dropped the gun and pulled out another one, and continued shooting. They dropped like flies around me. I pulled out a thing of laughing gas, and pulled the pin. I dropped it and the laughter filled the air. I heard someone scream MUSE, the music was richly refreshing to my ears. I couldn't play right now. I had a job to do.

I howled with laughter as I ran down the hallway, the guards in the holding cells hall were all chasing after me. I stopped and reached my hands into my pockets, and took two of the six guards down. I grabbed a gun and the other four fell, choking on their own blood. I quickly hurried to the interrogation rooms. I knew that my brother would be there. They had let him slip through his fingers with him in a holding cell about seven too many times before they realized their mistake.

I broke down the door, and saw two guards there with their guns drawn and loaded.

"Now, is that how you welcome an old friend back to her city?" I asked sweetly. I pulled my guitar from my back a gently strummed on it, using a knife for a pick.

"I came home for my brother, but found him back here. I was met with unfair cops, and guards with guns. You want to arrest me, but I am going to be the last thing you ever hear!" I screamed and through the knife in my hand at one guard, and shot the other. The one with knife in his shoulder screamed and screamed.

"Now, now. Can't have you screaming. You will give away my location. No we can't have that." I bent down and twisted the knife, he screamed louder. I pulled a knife with my free had and plunged it into his chest. "What a waste. You were music to my ears." I blew up the locked door. They wouldn't let guards have the keys to a criminal.

"Took you long enough!" Joker hissed.

"You would be in Arkham again if I wasn't such and upstanding student. I got here as fast as I could. My headmaster was beginning to have a second thought when I left." I grabbed as a few grenades and tossed them to Joker.

"Why are you giving these to me?" he asked.

"You really think that we would come in the way I came?" I tossed him his jacket and bag of weapons. "Make yourself useful." I began lining them across the wall. "Stand back!" I pulled a string that I had attached to all the grenades. The wall blew apart.

"Now, that my sister is a work of art."

I jumped out of the wall, and landed on my feet, three stories down. "Are you coming?" He jumped down next to me.

"Let's go home."

Joker

"So, Jack. I have a question for you. Do the words don't get caught mean absolutely anything to YOU!" My sister shouted. She had been silent the entire way back to the refurnished warehouse we had been calling home for eight years.

"Well, if Batsie wasn't always there to try and stop me, it would be a lot easier."

"Yet, you let him almost send you back to Arkham. Again."

"Jean, it wasn't my fault. This time. Literally! I was going for a walk, at night, and the bat jumped me. All I was trying to do was get some fresh air, and maybe kill a few thugs."

"That is rich coming from you." My sister looked at me. "How many did you kill that day?"

"One henchman and four guys on the street. They didn't even catch me in the act!"

"So you were dragged back to the station, and weren't even planning anything big?"

We looked at each other, and broke into a fit of hysteria.

"Us? Planning something? That's gold!" I gasped. My sister continued to laugh.

"I imagine that they tried to get you to spill the plans of what we were doing, and my whereabouts." Muse choked.

"Mae, do you forgive me?" I laughed. She had regained her anger when I said that.

"NO! AT MY SCHOOL, I HAVE A REPUTATION TO KEEP! THANK YOU VERY MUCH!"

"So I take it you are still angry."

"ANGRY? I have the biggest tests of my life next year, and one of my friends is going on a suicide mission to try and kill this guy that wants the magic community to be purified of all the filthy half-breeds, and dirty mudbloods. If he ever paid attention to our city, he would realize that there are non-magic people out there that could kill him before he even got one curse out. But you, are just big enough news to get in the magical newspaper. I get a letter this morning, along with the newspaper. My brother has been caught again, and he will rot in Arkham for months if I don't get him out. So I had to get the headmaster to allow me to leave school so I could get you out of jail again. If I wasn't a prefect, a bookworm, and the brightest which in my year, I would be letting you rot in Arkham."

"Did I say that I am sorry?"

"Yes you did."

"Will you forgive me?"

"Only if you let me stay for a while and keep my headmaster off my tail."

"Deal. Mae, I do want to ask you something."

"And that is?"

"Hermione Granger, golden girl of Hogwarts, wants to trick her headmaster to get him off her tail, so she can ditch school?"

She punched me in the arm for that. "Think what you will. I'm going to visit Jonny."

"The insane scarecrow doctor at the asylum?"

"Yes. Why?"

He just laughed as his sister left the warehouse they called home.

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