Ok so everyone seems confused on whom Thirteen is, he's the monster inside of Alvin. Thirteen is the monster, I hope that helped oh and how he got inside him well you'll have to read on to see! Thanks reviewers keep on reading and reviewing!

Brittany's pov.

" Do you know what's up with Alvin?" I looked up from my tray and squinted against the glare of the sun, Jeanette settled down beside me on the picnic table. ( I skipped ahead to lunch at their school!)

" What do you mean?" I asked curiously, sure this morning he had acted a little off but nothing like EPIC.

" He answered a really hard math problem that Simon and I couldn't even figure out, and he hasn't talked to anyone since this morning," my younger sister explained quietly.

I frowned, ok Alvin solving a simple math question is shocking but one that the two smartest people I know couldn't figure out, that was scary.

" Where is he now?" I asked standing up and gazing around the patio, " Inside somewhere," Simon answered as he jumped up onto the table, he was followed by Theodore and Eleanor.

I nodded and jumped down determined to fix whatever screws were loose inside my friend's head.

I wandered the halls for what seemed like ages! Ugh where is that red freak!

Suddenly something pitch black rammed into me sending me skidding across the tiled floor, I opened my eyes furious until my gaze landed on the culprit.

The black cat just stared at me its goldish red eyes burning with hunger as it looked me over, " You can't get away that easy Thirteen!" a man rounded the corner wearing a formal FBI uniform.

The cat rolled his eyes then SMILED! He lunged at me picking me up by my scruff, it didn't hurt but that didn't mean it wouldn't just snap my neck at any moment.

I screamed and thrashed around in the air, the FBI agent stopped dead cold and stared at us.

" Put your gun down and I'll spare the rodent," a cold hard voice warned, the cat's warm breath brushed against my neck. Oh nuts it talks!

" Please mister cat don't kill me, I'm not even worth it," I said smiling brightly even though I knew he couldn't see it.

"Shut up princess or I'll kill you just to get some peace and quiet! My head's killing me," he grumbled around my fur and skin.

" Thirteen just put her down," the agent muttered as he placed his gun down, I felt uh Thirteen smile.

"Nah," and with that he turned and bolted with me still clamped tightly in between his teeth. I screamed the whole way trying to get anyone to come to my rescue, I would even be thankful if that red rodent showed up.

The cat carried me all the way outside away from the school and into the woods, suddenly he skidded to a stop and dropped me hard.

I groaned in pain and looked up, he was holding his head in his paws and mumbled something about not letting him have any fun.

I watched in horror as his body twisted caved in on it's self, I knew this cat wasn't normal and now I'm starting to think that its actually a alien.

There was a flash of black light and I closed my eyes tightly, " Ow stupid demon cat," I opened my eyes my breath hitching in my throat.

Standing in the cat's place was Alvin; he looked up and froze with his head still in his paws.

" B-Britt how much did you see?" he asked after a moment, " E-everything," I stammered staring at him.

His eyes flashed black for a moment before going back to gold, " Dang it!" he roared before turning and slamming his fist into the trunk of a thick oak.

The wood exploded from the impact and I winced slightly, I blinked and stared at the huge crater in the trunk.

Alvin was pacing back and forth growling and muttering under his breath, I fidgeted with my tie and swallowed the fear in my throat.

" Alvin what are you?" I asked, he stopped dead in his tracks and looked up.

My breath caught in my throat and my whole body went stiff as I stared into the soulless black eyes, " I'm a Monster,"

Ok so this chapter was pretty short but I hoped you guys liked it! Thirteen is a monster/demon inside Alvin that can take on the form of a creature that hunts its prey in the dark. Thirteen is the name of the monster remember? Ok just wanted to clear up any confusion! Please R&R!