Warnings: slash, horror, blood, anal sex

A/N: Everyone have a safe and happy Halloween!

Disclaimer: I do not own nor make any money off of this fanfiction. JKR owns all.

Encounter

Harry was back to his old trick again of wandering the corridors late at night. It felt different now, of course. He wasn't trying to escape nightmares about a Dark Lord or fear of returning to the Dursleys. No, that was all past him now. Instead, he just felt a lingering sense of loss, and wanderlust struck him to go search for it.

Hogwarts had been restored much after the final battle, but there were still places in danger of collapsing and, therefore, off limits. As usual, he didn't care about those restrictions. Danger never bothered him.

Stumbling through rubble, he sensed magic enclose the place. Lights dimmed. Air grew still. Far away sounds were muted. Harry pulled out his wand and uttered a quick Lumos, but even that magic seemed dampened. He searched around as quietly as possible. He was sure he would miss something, however, as his blood pounded loud in his ears and he couldn't see very far in the dark. A small swish happened from off to his right, or was that just a lizard? He took in huge breaths.

A sultry voice startled him from behind. "My, my, still breaking rules, I see."

Harry whipped around, pointing his wand at the unseen attacker. "Stay back!"

"Really, Potter, if I had wanted you harmed, you wouldn't have been aware until the spell hit."

The figure stepped out of the shadows and slowly advanced. The moonlight bathed the thing in silvery mist and the skin glowed grey-white. Harry could make out a tall outline with straight, lanky hair, but it was when his wandlight illuminated the chin and prominent nose that he guessed who it was.

"Snape?"

"I'm so glad you came down to pay your respects to my deceased corpse, Potter. It ever so eases the task of finding you." Snape sneered, still advancing.

Harry gulped. Snape looked even more dangerous than before, eminating power and a predator's stance. His throat was a mess of sinews, barely healed over from Nagini's bite, and his long fingers now ended in razor sharp talons. Harry was sure he caught a flash of fang in the sneer too.

Harry's heartbeat increased rapidly when realization caught up with him. "You're a vampire. B-but ... but I saw you die!"

"That was the transformation, the turning. It was necessary to keep that in check as a precaution against the very act you witnessed in the Shrieking Shack."

"I don't understand. So you've been waiting down here all this time?"

"Yes, I knew you would return." As if that explained everything.

Forgetting himself, Harry stared into the other wizard's obsidian eyes, eyes that had held hate for so many years, eyes that had looked with desperation and hopelessness in death, eyes that now held a burning hunger. Harry found he couldn't look away.

Breath, cold and fetid, wafted over Harry's face as icy fingers caressed his cheek, the ends of the nails marking a faint line along the bone, causing Harry to shiver with fear and ... and something else. His heart skipped a beat and he couldn't gulp down enough air. Snape's dry lips ghosted over his, tingling Harry's overwrought nerves. Those lips then proceeded to follow the hand across the face to the ear where they wrung a moan from Harry's lungs and then a hoarse cry as the tongue snaked out to explore. Harry was trembling uncontrollably, not sure if he wanted fight or flight but unable to do either.

Snape lowered his head further down Harry's neck. His hands rested on Harry's hips, feeling the young man's strain, muscles tightening in anticipation.

"For all the years I have served to protect you, Potter, do you permit me this one concession?" Snape said, pausing over the pulse point.

Harry could barely think past the overwhelming sensations, but he knew he owed his professor. Lowering his lashes, he whispered, "Yes."

Snape sunk his fangs into the waiting flesh, hot life spilling between them. Harry screamed, subconsciously thrusting his body into Snape's. Pain and pleasure raced through him as they shared an intimacy of life.

If Harry could have looked in a mirror, he would have seen his own green eyes turn red.

Harry felt compelled to seek out Snape some weeks later.

"Why do I have this desire to return?"

"Because I summoned you."

"Don't I get a say? Free will?" Harry beseeched.

"You already relinquished that. Now it is my turn, and I choose to take you."

Snape advanced forward through the moonlight, a predator stalking his prey. "There is no use resisting me; my will is dominant."

At these words, Harry felt the other's presence reach into his mind and hold him captive. Harry tried to use Occlumency to push Snape out, but the other easily stayed rooted in place.

A malicious chuckle. "I have your blood, Harry, and by extension I have access to your brain, your body, your dreams, and even your very soul."

Harry shuddered at the implications of that.

"I do not request the world of you, Harry, just you." With that, Snape's hand caught the back of Harry's neck, preventing further retreats. His touch was like ice.

Not caring about his prey's discomfort, Snape descended upon Harry's mouth. Jolts of electricity flashed down all of his nerves, burning him from the inside out.

Harry opened his lips to shout but discovered it gave Snape an opening to thrust in his tongue. Harry's senses wheeled; his brain was engulfed in the vampire's presence, all thought leaving him as intoxication set in.

Snape laid Harry back on some nearby sheets, red eyes never leaving green, and with only a thought, a compulsion, the mist around them coalesced and dissipated both of their robes. Snape's hands began to roam over the nubile body, exploring and reveling in the touch. His lips and nose brushed over the flesh, taking in the scent of the young man, and his breath like shallow wisps puffed upon the downy hairs.

Goosebumps arose all over as Harry began to tremble from his powerlessness.

Snape made swift work of Harry's arousal, bringing forth the teenage hormones. Harry yearned for any touch - be it gentle or cruel.

"So eager," Snape mocked him.

Harry could not respond back. The trance was too great.

Snape brought himself to bear above him. "Do you consent?"

Harry was dazed, in a fog of lust and beguilement. The words hardly registered as he panted, "Yes, yes ... please."

Without hesitation, Snape swiftly entered Harry, burying himself fully, absorbing Harry's cry at the intrusion. He rocked Harry's body to a fever pitch, never letting up, never slowing, the hurt-filled sobs eventually turning to wanton moans.

Harry felt hot, leaden, faint. He gasped over and over at the tremors in his own self until he could take no more. "Please, make it ... anything ... I can't ... more, please."

At the height of the pinnacle, Snape lunged, thrusting deep into Harry's body and piercing Harry's neck with his fangs.

The smell of fresh blood saturated the air. It spoke of Power. Sex. Magic. Death.

Harry screamed at the onslaught of his senses. Energy surged through him as his mind was flung out into space. He pulsed and writhed. His life's blood poured out into Snape's greedy mouth, the feeling suspending him, keeping him trapped in the moment of orgasm while Snape drank his fill.

After an eternity passed, Snape released him. Harry could not move and he wasn't even sure he knew himself. He was back in the fog, hanging between life and death.

Slicing open his chest, Snape demanded, "Drink." He held Harry's mouth to the wound, and the coppery tang slid down Harry's throat.

"Sleep, my companion. You're new existence has just begun."

With that command, Harry closed his eyes. When next he opened them, they would be permanently red with the blood from his sire.

A/N: Reviews would be the best Halloween treat ever!