Shapeshifter

Prologue:

Sam groaned as the Shapeshifter tied his hands together with a course rope from Dean's bag. "What are you going to do to me?" Sam held his breath.

"I'm not going to do anything, Dean will though." The Shapeshifter gave him a smirk that was out of place on Dean's handsome face.

"They'll never catch him." Sam said to the monster, hoping to distract it.

"Oh it doesn't matter. Murder of the firsts, his own brother, he'll be hunted the rest of his life."The Shapeshifter told him matter-of-factly. He walked towards Sam who had moved to lie on the floor instead of uncomfortably against the leg of the pool table.

"I must say I will be sorry to lose this skin. Your brother has a lot of good qualities; you should appreciate them more." The Shapeshifter said a cruel glint in the eyes identical to his brother's. The Shapeshifter moved out of Sam's sight for a moment, he heard the clinking of glass and the sound of liquid being poured. "Cheers." The Shapeshifter said as he pulled a knife from Dean's bag. The Shapeshifter walked menacingly towards Sam. In a last ditch effort he brought his legs up and kicked the creature, the knife falling from his hand.

"You son of a bitch," the Shapeshifter cursed. Sam began to move towards the weapon, bubbles of hope building into his stomach. When he was within reach a foot stomped down, hard, onto Sam's hand.

"I don't think so Sammy."The Shapeshifter crouched down to stare into Sam's face. Dean's scent invaded his nostrils, causing the younger Winchester to shiver. This thing was so much like Dean, but at the same time not like Dean. Miniscule differences in posture, facial expressions - things that someone who'd spent the majority of their life around Dean would notice. The Shapeshifter picked up the knife and held it in front of Sam's face.

"This what you want?" He moved the knife to rest against Sam's cheek. He pressed and dragged the tip of the blade against his skin. Blood bloomed from the small wound. Sam's green eyes were wide and unblinking as the Shapeshifter pulled the knife and made small nicks on his face. Sam was afraid to move with the blade so close to his throat and with one of his arms indisposed. Sam swallowed hard as the Shapeshifter dragged the knife along Sam's stubble. The Shapeshifter moved away from Sam for a moment, enough time for Sam to roll away and try to formulate an escape plan.

As Sam lay on his back trying to wiggle free of his bonds, the Shapeshifter came to straddle Sam's lap. He froze at the contact. "What are you doing?" Sam whispered. The Shapeshifter didn't answer as he ran the tip of the knife gently up and down Sam's clothed chest. "What are you doing?" he repeated.

"Well there's something Dea- I've always wanted to do to you Sammy."

"It's Sam," he spat, trying to buck the Shapeshifter off him. But the monster wouldn't have it. He took the knife and slit open the Winchester's shirt to reveal Sam's well defined, scarred torso. The Shapeshifter set the blade aside to lean forward and lick the planes of Sam's chest.

"What are you doing?!" Sam panicked and tried to squirm out from under the Shapeshifter. That only succeeded in arousing his captor more. He pressed his hips down onto Sam's stomach.

"Do you feel that Sammy?" The Shapeshifter smirked wickedly. "This is what you do to your big brother."

"You're not him!" Sam cried desperately.

"Aren't I?" The Shapeshifter asked. "I look just like him; I have all his memoires, genetically identically. I am him Sammy."

"No you're not!" Sam insisted stubbornly. "Dean would never do this. He wouldn't hurt me."

"Oh, but he wants to baby boy." The Shapeshifter moaned as he rolled his hips against Sam. "You don't know how many cold showers I was forced to take because of you."

Sam shook his head causing his brown locks to flop over his eyes, serving as a barrier from this harsh reality. The Shapeshifter pushed his bangs back from Sam's orbs and for a moment, Sam believed that this was Dean, and his body slacked and he crumbled under the certainty of his situation.

"That's right Sammy, surrender to you big brother." The Shapeshifter coaxed as he undid Sam's pants, pulling them down to pool at his bound ankles. Sam tried to use his bound hands to push the Shapeshifter off but he just pinned Sam's arms above his head with one of Dean's muscular arms. The Shapeshifter used his free hand to grab the knife and remove Sam's boxers. The he dropped the knife again and grabbed Sam's spongy length and fondled it till it began to harden. Sam tried to hold in his mewls of pleasure. He closed his eyes tightly, trying to block out what was happening to him.

"Hey!" The Shapeshifter growled, squeezing Sam's fully hardening sex painfully. Sam's eyes opened against his will as he moaned loudly. "I want to look into your eyes as I violate you." And with that the Shapeshifter's free hand left Sam's arousal to remove his own pants and boxers. He then positioned himself at Sam's entrance. Sam felt the tip of the Shapeshifter brush against him before quickly entering his body. Sam bit down in his lip and drew blood. Tears spilled from his eyes as the Shapeshifter had his way with him, tearing him apart with each thrust.

Sam's organ was pressed between their stomachs, and after some time the pain turned to pleasure that Sam fought against. He struggled to silent his cries and stifle the jolts of desire he felt each time the Shapeshifter plunged into him. Soon the Shapeshifter made use of his free hand by teasing and stroking Sam's flesh, going from his chest, slowly inching for his prize – Sam's erection.

He lost track of how long the sweet torture lasted, but eventually Sam's body completely betrayed him as he spilled his sticky seed onto his belly. Shortly after the Shapeshifter cam inside Sam with a grunt. He lay on top of him, panting while Sam began to sob silently as the full weight of what had been done hit him. The Shapeshifter noticed this. He gently cupped Sam's face. The younger Winchester saw a look of concern on the Shapeshifter's face as he pulled out. He moved away from Sam and stood.

"Sammy, I -"

"HEY!" They both turned to see Dean standing in the doorway holding a gun with a look of pure rage on his face. Dean fired the gun, emptying the magazine of silver bullets into the Shapeshifter. Dean rushed to Sam when he was sure the damn thing was dead.

"Sammy," he whispered hoarsely as he reached to comfort his little brother.

"Don't touch me!" Sam cried brokenly as he turned onto his side to curl up into the fetal position, his back facing Dean.

"Oh my God, Sam!" Rebecca walked in to see the state of her friend. She moved to kneel beside him.

"Don't touch me!" Sam continued to chant as if it were his life line. Rebecca moved back to allow Dean room to calm his brother. He saw the knife that was laying near Sam, and cut him free of his bindings.

"Don't touch me. Don't touch me." Sam pleaded. Dean ignored him and pulled up his pants to rest loosely on his waist. Then he picked him up and carried him off, shivering, towards the Impala, only stopping to rip his pendant and ring off the bastard who'd raped him Sammy.

As he drove Sam to the Emergency Room, Sam cried and huddled against the passenger door. It pained Dean to see Sam afraid of him, to be looked at like he was the monster. Dean pushed the accelerator down, gunning it towards the hospital, as he reached into his pocket to dial their father's number.