I suddenly had this idea pop into my head one day and I'm like...that will be perfect! hope you all like a Castle fanfic. OCs for the win!

Damien Evans was a young man with a caramel skin tone midnight blue eyes and light brown hair, but at the moment he sat against a wall in a warehouse with a girl of about twelve years old. The girl had been kidnapped by some group of people but that was all he knew, he didn't want to push any further she was already shaken up enough. Her name was Kayla Ross, and she was pretty beat up. Which was the reason that the inside of the warehouse outside of the room they were in was covered in blood, various body parts, bullet holes, small fires, burn marks, but most obvious were the visible fifteen dead bodies. The room they were in he had tossed the dead guards out into the other part of the warehouse, he didn't want to upset the girl anymore, after all he was a really caring person.

What? Yeah he mercilessly slaughtered seventeen armed mercenaries, and enjoyed it greatly. That by no means meant he went around killing people he hasn't killed a person before today in thirty-five years. He just had no love for the wicked. No big deal. Right?

"Don't worry Kayla the police should be here any minute, till then I'll stay here to keep you safe", Damien whispered to the girl softly. She shakily nodded her head staring up into his blue eyes.

Damien stroked her hair and he inwardly sighed as his highly sensitive ears picked up the sound of a cars ignition turning of and a lot of footsteps. The police, good.

With Detective Kate Bekett -

"There", Kate told her partners pointing to a large warehouse, "Ryan, Esposito, you're with me… Castle stay in the car." A man with short brown hair pouted as he sat back down in the car.

The three approached the building but stopped when they saw the door was open, Kate frowned but continued into the building. However in all her years as a homicide detective she had never seen so much death, had to resist throwing up. She had expected armed thugs or mercenaries after they found out who the girl who had been kidnapped, but right now those mercenaries were red paint on the walls of the warehouse.

"My god what did this?" Esposito asked knowing full well that a human being couldn't do this, right? He stared at the bodies that laid everywhere each one had a look of pure terror. There were slash marks on the walls, small fires that didn't seem to even be burning anything. They all tensed up aiming their weapons at a door when they heard someone humming what sounded like a lullaby.

"Yo officers I'd come out with my hands up and all but I got shot in the leg and the shoulder and the dumb bullets are stuck so yeah. Plus, Kayla, ya know the girl who was kidnapped is in here she's fine, but she should see a doctor just in case." someone said from the other side of the door. The three lowered their weapons and walked over to the door opened the door to find a man who was covered in blood. The girl they were looking for was huddled against him.

"Ryan, Esposito help him up I got the girl", Kate ordered, she couldn't in good conscience leave an injured man. Plus she had questions for him.

They got the girl into the car and put the man who introduced himself as Damien Evans, was put in the car with Castle. Who instantly started asking him questions but shut up when he saw that Damien had passed out. They then waited for the "clean-up crew", the coroner and other officers to help clean up the mess of dead bodies. After they had arrived, Kate and her team left for the precinct.

"Explain now." Kate Beckett ordered Damien as she sat across from him in the interrogation room.

"Sure, I happened to be walking by that warehouse when I heard someone scream. Like any dumbass who would run towards possible danger I decided to investigate", he paused smirking at the annoyed look as he indirectly called her a dumbass. "went inside had lots of guns pointed at me, heard another scream and crying, got super pissed and killed everyone there except one dude who got away. But I got shot, proceeded to kill the two thugs guarding Kayla and sat down and waited for the police to arrive."

"I figured that but how", she asked. She had guessed that he had somehow been connected to what had happened, it basically looked like a slaughterhouse. She didn't want to believe someone could do that and wished he was lying, and that an animal had killed those men.

"Not only do I highly doubt you would believe me if I told you, but I'm not allowed to tell you, but that doesn't really matter to me if I'm not allowed to," Damien told the detective who raised an eyebrow at his words.

"Try me", she told him with a smirk.

"Fine, first let me ask you, are you willing to believe in monsters, demons or powers beyond you're understanding?" Damien stared into her eyes with a blank look as he used an ability that gave him one of his nicknames his irises changed from a midnight-blue to a glowing white, as this happened Kate's eyes changed to match his own. Link established.

Kate looked around confused first thing Damien's eyes change color and then she was in this strange field. Everything was tinted blue from the light of the moon she could see a forest and mountains. There was a large boulder with a sword and shield with a strange crest of a wolf on the shield.

"From the looks of it you don't realize where you are." A voice from behind her said. She spun around to see it was Damien, but he looked different, for one his irises were white his hair was longer and he had a pair of white wolf ears on his head. He also had three long white wolf tails waving behind him. Damien wore a sleeveless black coat with a grey fur collar, it was open revealing his perfectly sculpted body. He wore black brushed leather pants with no shoe, showing her that his toenails were actually sharp black claws. She had to admit that the look was really sexy.

"So you think I look sexy", he said with an amused grin, as she blushed and pointed at him.

"N-no I don't", she sputtered out, "wait are you reading my mind?" She looked at him in shock.

"How about I explain where we are to answer you, this", he said gesturing to the world around them, "is your and my soul, the eyes are the window/doorway to the soul. Now since you are human and have not found your purpose in life your soul has very little influence on the appearance, as to why I knew what you were thinking you can't lie or hide in your thoughts when our souls are linked." He looked at her to see if she understood what was happening, but she looked to be a bit taken aback by the fact she was in her soul... and his.

"What are you?", she was more curious than anything, someone who was so strong surely couldn't be human, she wanted to know what.

He shrugged his shoulders and looked to the forest, and the cracking of tree's drew Kate's attention, she drew a breath at the sheer size of the beast. It was a wolf, a white wolf with three long white tails waving behind it. Its eyes were a

"That is me"