AN: Hey people! So, I'm not sure how this story will do, but I've just had this idea floating around in my head and decided to write it. This is my first ROTG/Frozen fanfiction, so I hope you like it. This chapter will be more introductory more than anything else, just to get the basis of the story out there and if you guys show interest I'll continue with it. There will be no Jack in this chapter (darn it) but hopefully he'll enter soon. This is a Jelsa (Jack/Elsa) pairing...YAY! Please forgive me if I don't update this regularly, as I have a life outside of this as well as another ongoing fanfiction. (P.S. Please feel free to read my other fanfictions if you're an Arrow fan). Also forgive any spelling errors I might make, 'cause no matter how many times I proof read the damned thing, there always seems to be one or two errors that slip past me. Anyway, please enjoy!

Disclaimer: I do not own Frozen or Rise of the Guardians, but if I did I'd totally make a crossover movie!

Chapter 1

I'm running. It's dark all around me and I can barely see the street stretching out in front of me, but I keep on running. My mind swirls as I think of what just happened. What I saw... He killed them and now he's after me. I throw glance over my shoulder and stare into the glowing golden-yellow eyes that are chasing me. I push myself harder, my thin legs going as fast as they can. My lungs are burning, begging for oxygen, but I ignore their desperate plea. Black spots obscure my vision as my body starts to give in. His big hands are on my neck and I'm choking. My screams come out stangled. I can't see his face, all I can see are his eyes.

"Foolish girl! If you had not been there to see it, I might have let you live. You've seen too much. You know too much...I always finish what I start."

I wake up with a loud gasp that breaks into a sob. My sheets are tangled around my legs and my body is covered with a thin layer of sweat. It was just a dream Elsa... Except it wasn't just a dream. It was a memory. Well the most of it anyway. The only part that's not true, is him finding me. It's strange, I don't really know who he is. That night, that fateful night, all I saw of him was his golden yellow eyes...

(Flashback)

I was lying in my bed back in my hometown Arendelle. I usually fell asleep instantly, but that night my mind had other plans. It could have been because Anna's first birthday was the following day. Or it was because of the...changes I'd noticed... Like how my hot chocolate suddenly turned ice cold once I touched the mug, how my finger tips would turn cold every time I got emotional. The biggest and most recent change happened earlier that day.

I was running through the hallway, playing with Anna, when suddenly I turned a sharp corner and crashed straight into a small table. It hurt a little, but I wasn't worried about the pain. All I could acknowledge was the sound of glass shattering against the hard wooden floor of the living room. I had broken my mother's vase. My eyes grew wide, tears burning behind them. I'd never broken anything up until that point. My mother raced into the room with worried eyes and scanned both of us for injuries. Luckily Anna was a fair distance from the spray of glass and I too was unharmed.

My mother sighed in relief. She then turned to me with a stern, yet understanding, expression.

"Elsa, did you knock over this vase?"

She knew that I did, she just wanted me to tell the truth. And that's exactly what I did.

"Yes mama.", I replied, looking down. "I'm sorry, mama..."

I suddenly burst into tears. I couldn't stand disappointing my parents. I loved them more than anything. I started to feel the coldness rush into my fingers, but I ignored it for once. Suddenly I felt something soft and cold tickle my nose. I heard my mother gasp. I opened my eyes to find a thin layer of snow covering the floor around me. It wasn't much, just a little pile of snow at my feet, but I knew that I had caused it. My eyes widened. I looked up at my mother, expecting her to be horrified by her monster of a child. Instead I saw her eyes wide with wonder. She then sprung into action, ushering a yawning Anna out of the room and fetching a bucket and mop for the melting snow. All I could do was watch as my mother cleaned up the mess I'd made. Soon all signs of my breakdown had been disposed of.

My mother and I sat down on the couch. I clutched onto her tightly.

"M-mama...what's w-wrong with me?"

I felt her hold on me tighten as she kissed the top of my head.

"There is nothing wrong with you, Elsa. You are my perfect little princess."

"No, I'm not! Strange things happen when I'm sad! Mama, I'm scared... Am I cursed?"

She turned me in her arms to look me in the eyes. She spoke softly as if telling me a secret.

"Oh, my little Snowflake. You are most definitely not cursed...Gifted is a more accurate word. I'm going to tell you a secret, okay? But you must promise to not tell anyone, not even your father or Anna."

I nodded my head eagerly.

"Many years ago there was a secret magic in the land of Arendelle. There were trolls hiding in the forest and townspeople with gifts much like your own. A woman named Eira being one of them. She is one of your ancestors. She was blessed with the ability to control ice and snow. She lived her life normally, keeping her gift a secret. Eventually the townspeople found out about the gifted people and wiped them out entirely. Or so they thought.

"Eira had a daughter who also possessed her gift. It has been passed on for many generations. I myself have it in my blood, but I do not possess the gift of controlling ice and snow. Your grandfather could also not use the gift. You however...you are special, my little Snowflake. You are the first person in four generations who has received the gift."

I looked at her in wonder.

"This gift will protect you and give you great joy in your life, but ,if not controlled, it can also be dangerous. Therefore I shall teach you how to control your powers and emotions, but you must never reveal your gift to the world. It'll be just between us two. Promise me that, Snowflake?"

"I promise, mama."

She hugged me tightly.

So that night as I laid in bed, sleep evaded me. I mean, that's a lot for a six year old to take in. The house was eerily quiet that night. Mostly because Anna was sleeping over at a friend from daycare. Mother and father wanted to surprise her with a huge party once she got home the next morning. I sighed and sat up in bed, looking out of the window to see our front lawn covered with pink streamers and helium balloons tied to the white picket fence surrounding our house. When the decorations had been put up in the late afternoon it looked quite pretty. At night though, it seemed to lose its charm...

Suddenly there was a crash and a blood curdling scream that made my blood turn to ice. Then again, it might have been my powers flowing through my veins. Despite my better judgement, I made my way towards the origin of the sound. I cautiously opened the door and quietly padded down the stairs. When I reached the bottom of the stairs I stopped in my tracks. I took in the horrific scene before me.

My mother laid sprawled on the floor in a puddle of her own blood. A sharp black object was protruding from her chest. Her breathing was laboured and she was struggling to stay alive. I then became aware of the dark masculine figure creeping towards her. I was about to shout to her when my father raced in, tackling the man to the ground. I watched as they struggled, before the unimaginable happened. Out of nowhere, the man seemed to obtain a black knife similar to the one in my mother's chest. Before I had the chance to look away, he slashed the knife across my father's throat. I didn't have to check. I knew he was dead. My mother seemed to be semi-conscious at this point. Her eyes found mine and widened as she assessed the situation. With the little strength that she had left, she managed to mouth one word with a clear message: 'Run'

I looked up at the man. He was still occupied, hunched over my father. When my eyes returned to my mother's, it was too late. Her chest had stilled, her eyes were lifeless and unseeing. Shock overtook my body and I stumbled backwards, into that damned table. The noise caught the attention of the dark man and he turned. His glowing golden-yellow eyes focused on me and I could sense him smiling maliciously. When he spoke his voice was smooth, but sinister.

"Come hither, little one. Would you like to say hi to your mommy and daddy?"

I staggered back a few steps.

"Oh, come now. No need to be difficult. I always finish what I start, so we can do this the easy way or the hard way.", he said, taking a step in my direction

That's when I ran. I bolted through the living room, across the foyer, and burst out the door. I started down the road, running as fast as my short legs could carry me and screaming at the top of my lungs. All along our street, lights flickered on behind closed curtains. I could feel him coming closer. I could also feel the coldness again, ironically burning at my fingertips. Suddenly the footsteps were right behind me and I felt a burning pain across my left shoulder. I cried out and fell to the pavement. I rolled over, lying on my back, and came face to face with the killer. He raised his right hand, ready to strike me down. I brought up my arms, waiting for pain and death to consume me, but it never did. I peeked out from behind my arms to find the man on the ground clutching his side. It was covered in ice.

The man looked at me curiously and tried to stand, only to fall back down again. He then started laughing manically and gave me an evil smirk.

"You may have gotten away this time, but this will not be the last you see of me. I always finish what I start."

He raised his hand and was encircled by a cloud of, what seemed to be, black sand. Then he was gone, just like that. I was left alone on the pavement scared, confused and, worst of all, orphaned.

(End of flashback)

But that was many years ago. Seventeen years ago to be exact. I'm now twenty-three years old, living in my own apartment in New York. Why New York, you ask? Well you see, after my parents' murder I was distraught. What made it even worse is that the killer seemed to have vanished entirely. Since then I've been hellbent on finding him. I started to look into it when I was thirteen. By the time I turned eighteen I'd tried every possible angle in Arendelle. Then one day a news report stated that similar murders had taken place in America, near New York. So after I graduated, I accepted a scholarship from NYU for a degree in journalism.

My life consisted of studying, investigating and waitressing at the diner across the street. Once I graduated I got a job at Walt Disney Times, which is a major publisher. They publish newspapers, magazines, they even have their own blog! My role at WDT is simply being a journalist, which is great. I love what I do and sometimes the stories I look into are connected to my investigation. They're calling him 'The Boogeyman' because of his dark appearance and his ability to slip away unnoticed. Apparently he's a serial killer famous for targeting families with unique history. He's ruthless, cunning and meticulous.

As I lay in bed my thoughts run wild. I still haven't found him and somedays it seems as though I've worked my way into one huge dead end. I never give up though. I can't give up. Not after everything my parents did for me and Anna. I let out a sigh. Anna... She'll be graduating this year. Apparently she's staying in Arendelle after that, at least that's what uncle Kai and aunt Gerda told me. Anna and I haven't been all that close since our parents' death. In an effort to keep my powers a secret, I had shut out all outside contact including my sister. Eventually I got control of my power, but not entirely. Whenever I get emotional, I still have to keep myself in check.

I roll onto my side and check the glowing numbers of my alarm clock. I then see that it's only five o'clock in the morning. I groan tiredly. There's no way that I'll fall asleep again. I lean over and switch on my lamp, filling the room with a soft yellow glow. I roll out of bed and stumble over to my bookcase. A while ago I realised that keeping my research out in the open was a bad idea. I then reinvented my bookcase as a sort of covering for it. The bookcase is attatched to a rail which it slides across from side to side. The bookcase is kept in place by a latch at the top of the rail. I reach for the red book on the right of the middle shelf and pull it, unlocking the latch. I slide the bookcase to my left and enter the secret room behind it.

Yes, I do indeed have a secret room. I use it to store my research about my investigation. I stand in front of my bulletin board, tracing the string that connects the murders.

My name is Elsa Winters, and I will find my parents' killer.

AN: Phew! Why are my first chapters always the longest?! Oh, and I chose the name Eira 'cause apparently it means 'Snow' in Welsh. I know there are many names that mean 'Snow', but this name just seemed fitting. It's pronounced 'AY-ruh'. Not that it's very important or anything. Anyway, I hope you liked it... I'm really excited to start with this story. I think Jelsa is a great fandom with loads of potential. So if you liked it, please show some love with a Fav/Follow/Review. If you didn't like it...sorry...

(P.S. Sorry if I'm a bit chatty in my AN's, it's just a thing I do...)

See you next time!

DDxx