Part One:

You looked at the time; it was well past late and moving onto early the next day. The sun was already coming up and the outside was a dusky blue color. One more reblog, then bed. You jumped as your phone went off.

"Who the hell would be texting me now?" You asked your phone. You made your way to your inbox and read the following message:

Roof. I'm waiting - JM

Your eyes went wide. Was this some kind of joke? Who was this JM guy? You pondered over the names of people you knew and could not place someone with the initials 'JM.' Perhaps it was a wrong number. Perhaps it wasn't and there really was someone named 'JM" on the roof waiting to talk to you. That nagging voice in your head reminded you that this could be dangerous, but you decided to go anyway.

The sun was starting to peek over the horizon by the time you made your way up to the roof. You were held up by some breakfast. You crept quietly around the corner of the stairway and saw a man sitting on the ledge.

"Finally!" He shouted at you.

"I suppose you're JM?"

"Obviously. Jim Moriarty"

"What do you want?"

"I want you."

"What?"

"This Bitch," Jim sighed, his palm covering his face. He slowly lowered his palm and looked at you with dark, dead eyes. Your skin crawled.

"Um, What?"

"There's a man. He's on the side of the angels."

You raised an eyebrow and regretted ever coming up to the roof. "Okay…"

"Actually," Jim stood up and walked up to you, "he IS an angel."

Jim stared at you unblinkingly as you tried to comprehend what was happening. Maybe you should've brought a sword or a baseball bat.

"Is that a flirtation?" Another voice, this one gravelly came from behind you. You spun on your heels and found yourself nose to nose with an expressionless man in a tan trench coat. You nearly toppled over backwards, but remembered that Jim was directly behind you and shuffled sideways instead.

"There he is, the angel himself," Jim purred in his ever-changing tone.

"Wait, I saw this on Dean's computer," the man in the trench coat gave an exaggerated wink, flicked out his tongue in what you guessed was supposed to be seductive, smiled, and then immediately returned to his blank expression.

"Not bad, angel boy," You looked over at Jim, only this time his eyes were completely black.

"What the fuck?" You screamed.

"He's a demon!" Another voice joined the party. A man with a gruff voice but rather pretty face saddled up beside the 'angel' in the trench coat. He pulled out a knife and focused on Jim.

You squeezed your eyes tight and ran your hands over your face. "Fuck my life. Now what?"

The angel turned his attention to this new addition, the tip of his nose nearly brushing the new man's cheek. "Dean I think this demon was coming on to me. I tried that thing I saw on your computer, but –"

"Whoa! Whoa! Cas, I don't want to know," The man called Dean held his palms out to the angel 'Cas' indicating that that sentence needed to stop where it was.

"So he's a demon? Is that why his eyes went black?" You asked Dean and Cas. Dean turned and Cas once again was suddenly nose to nose with you.

"Yes he is a demon," Cas's voice rumbled, his breath on your cheek, "and you have to kill him."

"What?!" You and Dean both shouted at Cas.

"I'm sorry Dean, but since we don't actually exist in this universe we cannot kill Jim Moriarty."

"What the hell are you saying, Cas?" Dean's brows furrowed and his large eyes blazed.

"We don't exist here, Dean. Only someone who can exist in many universes can kill him. This," Cas poked you in the chest, "is a Fangirl."

Jim and Dean both gasped at this statement. You were downright lost. Sure you had multiple interests, but how did that give you power over anything? You looked at the three men, trying to get a feel for what being a Fangirl meant. Jim looked dangerously scared and seemed like he was ready to fight for his life. Cas, who was still an inch from you, stared at you almost reverently. A strong breeze rushed across the rooftop, ruffling Dean's shirt as he gazed at you with longing.

"My body is ready," he whispered into the breeze. Your head was going to explode.

"I don't know what my feelings are doing," You were moments from just running back home and hiding under the bed. But at the same time you felt excited, scared, empowered, confused, angry, and a little intrigued. With a rush of courage and a wink from Dean, you rushed at Jim. He was completely off guard, the look of surprise on his face genuine as you shoved him off the rooftop.

"BOOM! Suck it!" Dean yelled over the ledge as he watched Jim plunge to the sidewalk below. He turned and smiled at you. "Good work, beautiful."

"Um, thanks," you said as you made your way back to your flat. To your dismay, Cas and Dean followed. Once you were at your door you realized that you had locked yourself out.

"Are you locked out?" You looked past Cas and Dean and saw your neighbor Tom smirking at you.

"No," you lied, "I have a key somewhere."

"Oooh!" Tom hooted in a mocking tone, looking at Cas and Dean. "Am I not invited to the party?"

"Shut up, Tom," you grumbled, not in the mood for your mischievous neighbor.

"ehehehehehe," Tom threw his head back and laughed at your expense as he closed his door.

You were about to let loose a string of swears when you suddenly found yourself inside your flat. You looked to your left and verified that you were in your living room. You looked to your right and flinched as you saw Cas staring at you from an inch away.

"You seemed to have foolishly locked your door without bringing a method to unlock it when you return. So I just brought us inside."

"Um, thanks Cas," You patted him on the shoulder, and he seemed pleased by it.

A crash rang out from your bedroom and you sighed heavily. What could possibly be happening now?

"Sorry! Sorry!" A chirpy man's voice called out from the room. The man himself emerged with his hands up, showing that he was not a threat. He was wearing a brown suit, had messy, brown hair, and an expression of wonderment.

"Who the hell are you?" Dean growled at the man.

"I'm the Doctor. Who the hell are you?" the Doctor smiled widely, unfazed by Dean's disdain.

"He's an alien, Dean," Cas stated, his low voice a little perplexed. You look over and Cas was a millimeter from the Doctor.

"An alien? Really?" Dean stammered at Cas incredulously. "Come on!"

"An alien and a Fangirl all in one day," Cas looked off to the distance dreamily.

"Fangirl?" the Doctor looked over at you. He rubbed his hands together and winked at you. You had no idea what was inspiring these sudden flirtations, but it wasn't all that bad.

"Hey," Dean narrowed his eyes at the Doctor. You tried not to smile at Dean's jealousy.Definitely not all that bad.

"Well," the Doctor drew out the word, "I think we are after the same bloke. Moriarty?"

"Yeah," You, Dean, and Cas responded together. The Doctor chuckled.

"Are you triplets?"

"We are not related," Cas replied flatly. Dean covered his face with his hand.

"Ok, Doctor, what do you know about this Moriarty dude?"

"I know that only someone who exists in all universes can do him in. the Fangirl."

"I thought I just did that," you were starting to get a bit worried as to where this was going.

"The fall wouldn't kill him, just piss him off," Dean was pacing now. You were definitely getting nervous.

"Right! Well! Let's go and find him! Allons-Y!" the Doctor bolted for the door, Cas and Dean reluctantly following. You sigh again and take a step, only to find that there is a knife at your throat and you are being held.

"Sorry boys!" Jim Moriarty's voice came from behind you in a sing-song tone. He tightened his other arm around your waist. "Change of plans!"

"Let her go you dick or we will make you let her go!" Dean brandished the strange knife at Moriarty.

"No, you won't," the laughter was gone from Jim's voice. You felt the scenery change around you again like when Cas zapped you into your flat. Jim was no longer behind you, but you were not at home. You spin around and around, trying to figure out where you are.