AN: Hey there, it is my first attempt at a Supernatural fanfiction so I hope you're going to like it. Thanks for reading and even more for reviewing!

Summary : Two brothers and a hunt that is way too personal for the Winchesters when it might just turn against them. Can they save each other or will they fall at the mercy of evil ?

Disclaimer: I do not own Supernatural or intend to make any profit out of this.

Enjoy!

SPN

Gregory looked at himself in the mirror and tightened his tie before fixing his collar. He paused for a second, considering how formal he looked. With a slight move of his hand, he drew back bangs of hair that had fallen upon his sweaty brow. Somehow he was nervous to go over to his parent's house but he knew he didn't have a choice since it was his mother's birthday. Mostly, he apprehended seeing his brother again because he knew the guy wouldn't miss a chance to pick at him. With a lingering sigh, he caught the present he had picked up earlier that day and walked across his apartment. On the way, he picked up his keys, put on his coat and quietly left the building.

Eden, Vermont

He drove up to his old family house as memories came running up to him. He parked on the lawn of large yard and stared for minutes at an old tree that shadowed upon the house. He suddenly remembered one time when he was a kid and his brother made him climb up the tree, assuring the kid that it was safe to do so. Greg also remembered falling off that same tree, thus broking his arm and having to wear a cast for weeks. His brother had convinced their parents that he had nothing to do with it, that it was just the kid fooling around. Gregory was pissed for a while but he quickly forgave his brother whom he loved no matter what.

Shaking away from his memory, the now grown up man walked out of his car and shakily made his way towards the front porch. His mother appeared a few seconds after he rang the door bell and greeted him with a warm hug. "Hey mom, happy birthday!" he wished. She smiled widely.

"Thank you, dear Gregory. Please come inside!" she replied. He nodded and entered the memory-filled place. He took off his coat and hung it in the closet. His mom then led him to the living room where his father and brother were sitting, watching baseball on television. Both of them hardly looked up from the show. Gregory bowed his head with a sense of habit. "Dad. Tom." he greeted them both. His dad took a swig from the bottle of beer he was holding. He then looked up and offered Greg a nod. Thomas finally looked up from the TV with a cocky grin. "Hey, there's my pain in the ass of a brother" he chimed. Greg gulped at the comment when his mother Rose came from behind.

"Thomas, you be nice to your brother for once! It's my birthday, can't I even have some decent time with my family?!" she inquired. Thomas mumbled an apology before burping from his beer. Rose rolled her eyes and motioned for Greg to sit at the table. His brother finally joined him. Rose was finishing the last settings of the table before they could eat. She brought both the mashed potatoes and the boiled vegetables and set them on the table.

Tom started filling his plate with a starving look to his eyes. His brother watched him from the side. Rose came back to the dining room with the plate of meat and yelled over her shoulder to her husband whom was still on the couch. "Ben turn off that TV and have dinner with us!" she ordered. The old man grunted but did as he was told. When they were all seated, Thomas started staring at Gregory. The youngest felt uncomfortable.

"So, little brother. How's school" he asked on a condescending tone. He added his best cocky grin. Benjamin snorted and picked at his steak with his fork. Rose smiled and turned to her youngest.

"Oh yes my dear, how do you like college. Is it cool? Did you make plenty of friends?" his mother asked enthusiastically. Gregory shrugged and watched his brother laugh at their mom's question.

"Come on, mom. You know Greg doesn't have friends!" Tom teased. Greg swallowed a harsh piece of meat. Rose sighed and shook her head.

"What did I say, you leave your brother alone!" she insisted. Thomas shrugged and engulfed a mouthful of potatoes.

"It's ok, mom. And yes I like college" Gregory replied, which made his mother smile. Benjamin slammed the butt of his knife on the table.

"Can't we talk about baseball? I like baseball" he grunted. The youngest bowed his head. Rose sighed, placing her hand upon his. Thomas giggled.

"Right, because daddy's so proud of this kid. Good boy got his way into college, ain't that great?!" he teased. Gregory felt himself boil inside. Rose stood up from her place with an angry look.

"Tom you're just jealous your brother can do what you could not! Now would you please put an end to this for the sake of this family!" she spat. Thomas stopped laughing and gave Greg one last look before stabbing at his steak. Rose sat back down and waited. They ended their meal with no further incident. Thomas went out for a smoke while Greg helped his mother with the dishes.

They finally settled in the living room and Thomas came into the room with a large bouquet of colorful flowers. Rose giggled and sniffed the awesome smell of flowers. She thanked her oldest with a kiss on the cheek. Gregory then pulled a gift from his coat and handed it to his mother. She scrutinized it amusedly then went for the wrapping paper. Inside there was a book.

"What is it" she asked her youngest.

"It's girl crap" Tom joked. That had Benjamin laughing. Gregory didn't pay attention to them.

"We studied that novel in class and it reminded me of you. I really think you are going to like it" he explained. His mother smiled widely.

"Well thank you, sweetheart! That is so nice of you! Your brother keeps buying me flowers but you, you go for something personal. Thank you so much!" she thanked. Greg smiled and hugged his mother. From the corner of his eyes, he saw his brother. Thomas didn't miss the last comment and he looked about to go out of his mind.

Gregory ignored it and went into the kitchen to get the cake. "Such a nice move from you again. You're always the perfect one, aren't you?" he heard. Greg turned to see Thomas, clenching his fists. He went to argue but everything happened to fast. Tom grabbed a pan from the oven and hit his brother with it. Greg put his hands up to protect his face but his brother hit with a blinded rage.

Tom hit and hit and hit. Rose came behind, alerted by the fuss. She let out a loud scream of terror. Tom stopped for a second and looked at the bloody mess he had made. He saw his brother, broken and bloodied. He dropped the pan and sobbed at the realization of what he had done. Remorse filled him whole. A loud pain-filled scream echoed from his deepest core.

SPN

Springfield, Massachusetts

Sam shifted in his chair and rubbed the bridge of his nose. He then took a sip from his coffee. He had lost count of how many he had. For the past days, he had been up and around trying to find a hunt. Dean was getting fidgety and he knew that was because his big brother couldn't wait to get back on the road. Since Sam was the designated researcher, he had been on the net for hours again, looking for a sign of supernatural activity. He heard the faucet of the shower squeak from the movement. Another cheap motel. He had to face the fact that this was the way his life would probably be until the day he died.

He often imagined what his life would be if he had done something else. He wondered what it would have been like to go to Stanford and be normal like everybody else. Only, no matter how much he thought he would like to be different, he couldn't picture himself doing anything different. The motels and the hunts with his brother; that was all part of his normal life now.

He snapped out of his thoughts when the bathroom door opened and Dean walked out in a cloud of steam, a towel wrapped around his waist just below his bare chest. Sam frowned. "Did you take a week-worth of warm water or can I expect to have any?" he asked.

Dean smirked. "Nothing less for the hard worker I am!" he replied cockily. Sam let out a long breath.

"Dude, you look terrible!" Dean pointed out, studying the kid's features. Sam rolled his eyes. "Maybe because I have been hard working for the past days, doing some research while you went out with the girls from the bar!" Sam spat.

Dean grinned. "Making girls happy is hard work too, you know!" he replied.

Sam breathed deeply. He wanted to knock some sense into his brother and to make him understand that he was exhausted. Dean caught a glimpse of how his brother didn't feel like joking around and became somehow more serious.

"Ok so did you find anything?" he asked, eyeing the laptop Sam had been working on for hours. The youngest Winchester sighed and turned the computer screen towards his brother. Dean peeked at the articles but he knew Sam would give him the data anyway.

"One week ago, two brothers in their teenage start fighting over a girl. She chose the youngest one of them" Sam stated. Dean waited, eager. "So?" he asked. Sam swallowed.

"So his brother stabbed him with a cutter" Sam finished. Dean winced. "Well, I'd be pissed too if any girl picked you over me. Not that it would happen anyway" Dean finished with a smirk.

Sam rolled his eyes. "He's sixteen, Dean!" he said in disbelief. Dean shrugged but Sam went on.

"Then two days ago, a man named Thomas beat his brother to death with a frying pan during their mother's birthday party…" he completed. Dean remained perplexed.

"And where did that happen?" Dean finally asked.

"Eden, Vermont" Sam specified. Dean grimaced. "Well that sounds heavenly" he joked. Sam didn't know if he should laugh or be perplexed. "What do you think?" he finally asked aloud. Dean shrugged.

"Well, two big brothers getting rid of their worst pain in the ass in the same week, same town. Yeah, we should check it out!" he exclaimed. Sam looked at him deeply. Dean shrugged. "What?!"

The youngest tried to calm down some and rested his eyes on the carpet. "I don't know, Dean" he finally replied. "If whatever this is is making brothers kill each other, I'm not sure I want to jump in!" he confessed. Dean sighed.

"Come on. We have to do something! We cannot just bail on a case like that. Innocent people may be in danger" Dean explained. Sam shrugged.

"We could call Bobby and tell him to send other hunters" he proposed. Dean shook his head. "Let's just check it out, ok? Maybe it's nothing" Dean pleaded. Sam looked back up and right into his brother's eyes.

"Or maybe there's a demon out there, or even a spirit, that likes to possess people and make them kill their siblings!" Sam said. His older brother looked at him seriously.

"Then we have to make sure it doesn't get to anyone else" Dean stated. Sam let out a long breath because he knew there was nothing more he could say to make his big brother change his mind now. "Fine" he mumbled. Dean smirked at his victory.

"Luckily we're not too far from there. Pack your things, we're leaving in half an hour" he stated.

SPN

Eden, Vermont

Dean parked the Impala outside of a small homely house. He noticed the old tree shadowing it from behind. That reminded him of the tree that covered their old house in Lawrence. The Winchesters both got out of the car, dressed in suit and ties. They walked towards the front porch and knocked on the door. An old and unshaven looking man opened the door with a grunt. Upon seeing the brothers, he frowned.

"Who are you?" he asked. Sam and Dean both raised their federal agents fake badges.

"FBI" Dean stated. "We want to ask you and your family a few questions" he added. The man didn't seem too keen about the idea but he let them in anyway. He walked right to his sofa and crashed down on it. Sitting next to him was a petite woman looking distressed. She stared into nothingness and didn't seem to notice that there were visitors.

Dean cleared his throat. Rose finally looked up. "Who are you?" she asked. Dean looked at Sam and then back at the woman. "I'm agent Plant and this is agent Page" he said pointing towards Sam. The lady nodded without much acknowledgment.

"We've been assigned to your son's case and we understand this happened here. Can you tell us what happened?" Dean continued. Rose started to shake.

"Thomas…he…he hurt my baby" she stuttered. Sam walked forward and sat next to her, placing a hand on her shoulder to stop her shivering. She calmed slightly under his touch. Dean rolled his eyes.

"Do you know why Thomas would do something like that?" he asked. The lady shook her head.

"I don't understand. Tom would never… Sure they picked at each other but it was never… I don't know what you want but if you want to understand, speak to Tom" she cried.

Dean nodded. Sam stood up. "Thanks for your help and sorry for your loss" Sam whispered shyly. She nodded and with that, they were gone.

SPN

Thomas had been moved to the neurologic ward of Copley Hospital in Morrisville. Sam and Dean had to use their FBI subterfuge again to get to him. When they walked inside the dimly lit room, they found Thomas cuffed to his bed. He lay on his back and stared endlessly at the ceiling. Dean cleared his throat to make their presence known. Thomas slowly turned his eyes towards them. They were dazed eyes. Dean understood just how medicated the guy was.

"Who are you" the boy whispered. Dean took out his badge. "Agent Plant, I'm a fed. I want to ask questions about what happened to Gregory" he stated.

Thomas started shaking and water welled in his eyes. A long tear rolled down his cheek. "I tried to stop…" he started. "Stop what" Dean asked. Sam was standing on the side, looking puzzled. Tom cried some more.

"I could see my hands…the hits… but I couldn't stop" he said. Dean was all ears now. "It wasn't me…" he finally said. "It was something in me…I watched it and felt it kill my brother" he cried. Sam and Dean exchanged worried looks.

"Like you were possessed?" Dean attempted. The guy simply nodded and cried some more. Then he started fighting the cuffs violently. "I couldn't…stop…it. I wasn't…strong…enough! Damn it…Greg!"

SPN

It was dark outside. Sam was waiting in the Impala while Dean was checking in at the motel. The youngest Winchester didn't want to admit it in front of his brother but he was terrified. The look in Thomas's eyes was carved into his brain. He could see the hurt and pain as if Thomas really didn't want to kill his brother but didn't have a choice and had to sit back and watch it happen. Sam couldn't help but to think that if the spirit got to Dean, it could do the same. And Dean would be forced to sit back and watch his body take out his own brother as well. A shiver went through his spine at the thought. He snapped out of it when Dean came back with the keys to their room. Sam relaxed a bit and went for his belongings in the trunk.

The brothers sat together in the motel and processed the new data. Sam shivered. "Possession, uh..." he started. Dean nodded. "Demon or spirit… maybe a ghost. Do we know if anything similar ever happened in Eden?" he asked.

Sam shook his head. "I saw a local library. Maybe we can check that out tomorrow" he proposed. Dean nodded.

"So it takes on big brothers and makes them kill their baby brother" Dean stated. Sam stayed silent. "It's creepy" the oldest finally said. Sam shivered. "I don't like it" he said.

Deep down inside, Dean didn't like it either. "Come on, it's not like I would fall for that" Dean said. Sam looked at him deeply, fear obvious in his eyes. "You heard what Thomas said, Dean. He couldn't have controlled it, even if he wanted to…" Sam stated.

Dean shrugged. He didn't know what to say. Deep down, he was scared too.

TBC

That's it for now. Should I go on with this story? Please let me know what you think and thank you for reading!