Disclaimer: I do not own Harry Potter and never will. The series and characters belong to the brilliant mind of JKRowling, and I do not make any money off of this.

Title: Advocatus Diaboli
Characters: Severus Snape, Sirius Black, Harry Potter (Black), Lucius Malfoy, Narcissa Malfoy, Remus Lupin, James Potter, Lily Potter, Julian Potter, Draco Malfoy, Blaise Zabini, Alana Emerson, Ron Weasley, Hermione Granger, Voldemort and Simoné Zabini
Pairings: Sirius/Severus
Rating: M
Chapter: Prologue
Genre: Drama/Supernatural
Words per Chapter: 3,470
Warnings:vampires, werewolves, AU (Big time), slash, entire vampire and werewolve structure and society, political intrigue, Voldemort times, supernatural confrontations, OC's, seers, and whatever else this demented author comes up with.
Summary: Harry wasn't who people believe; he's really a vampire prince. Yet, his life wasn't the same. What can a young vampire do when he's faced with a school, coronations and a dark lord who wants his people?
Notes: This series is was created in a sociology class and the title is Latin for Devil's Advocate. I also dedicate this chapter to Daeleniel Shadowphyre, my sister.

Prologue

A young man with pale skin, high cheekbones and chin length black hair sat on a beige colored armchair in a nice living room. His eyes were fathomless grey in colour, changing at strange moments. He wore a simple pair of tan slacks and a blue long sleeved shirt. His eyes were focused on the three people that sat in front of him.

One of the three was a man with short messy hair. His eyes were hazel colored, but they were hidden behind a pair of thick-rimmed glasses. The appearance of his face was boyish, but only because his cheekbones were not prominent. The other was a woman with flaming red hair and vivid green eyes. Her skin was lightly tanned and her features were of a delicate nature. Held within her arms was the third person. The third was a sleeping infant who appeared as if he would have black hair when he grew up. His eyes were hard to see, as they were closed, and the little boy was everything a newborn infant should look like.

"Why did you wish to speak with us so urgently Sirius?" the red haired woman asked. The straight haired man with black hair was recognized as Sirius. Sirius ran his long fingers through his hair, letting the long locks fall through the digits. No words were shared between the people in the room for several moments. What he wanted to explain to the young couple was delicate, and he knew that he had to carefully share the words he had chosen. He knew the words were not likely to be well-received. He could envision the hostility that would be met with the words he was about to speak. Sirius only knew that these words needed to be shared; otherwise the very thing he wanted to talk about would be ignored.

Sirius let out a soft sigh. "Well…I don't know how to say this, but I took a look at Harry's blood tests, like you asked me to…And…Well…Harry has active vampire genes. This means that you both carry the recessive gene." He stopped speaking all of a sudden; watching the reaction the other two gave. The couple looked at the little infant in his mother's arms, the looks on their face spoke of astonishment. They obviously had not expected such a thing to happen to their child.

"Why is this important? I mean, if it's active, but recessive," James started to say. He never got to finish that comment, as Sirius held up his hand, effectively silencing him. He shook his head; the expression he gave them was one that could easily portray sadness. James waited for Sirius to say something, but the man didn't speak for a long, tense minute. James was about to continue his previous statement, but was stopped once again, as Sirius decided it was time to speak.

"You two do not understand the seriousness of the situation," Sirius pointed out. The two gave him a look, as if they were trying to say that they couldn't understand it unless he actually took the time to explain it. Sirius sighed. "The facts remain. Those genes are present in Harry, because you both have the recessive quality. This means that he is a full vampire, he's not human at all." They looked at Sirius like he had lost most of his marbles. To them, that was likely the truth, but for Sirius, he was being perfectly reasonable. He was only tell them the truth about their son, it wasn't his fault if they didn't believe it or not.

Lily began to shake her head. "No, there's no way my baby boy is a vampire. You've got the wrong child Sirius." She held Harry closer to her, the little infant sleeping through the whole process. The child was completely unaware of what to expect or what his parents were fretting over.

Sirius ran his fingers through his hair, his levels of stress rising thanks to Lily's statement. He didn't understand why it was so hard to accept; then again, he had secrets of his own. "Lily, he is a vampire, flesh and blood born vampire. I know that's shocking, but it's the truth. Harry must be taken to the main vampire realm in the United Kingdom, otherwise he'll be targeted." Lily gave him a look that said he was out of his mind. This only caused Sirius to clench his teeth, trying quite hard not to grind them.

"Sirius, Harry is MY son, and I will never give him to a bunch of strangers." She shifted Harry in her arms. She wanted him to be as close as he could. Sirius was beginning to get quite annoyed with Lily's attitude. Needless to say, he began to feel like the entire world was against him in that instant. If there was one thing that Sirius never wanted to do, it was get into a battle of stubbornness with Lily. He swore that all redheads had to be that stubborn.

Sirius looked at Lily, trying to keep his face as calm as possible. "Lily, you don't need to worry about Harry going to some stranger. He'll be with me the entire time." He gave them a tight-lipped smile. That was an interesting thing about Sirius, he loved to smile, but when it came to smiling at night, he never gave them a toothy smile. That was always something odd that nobody could figure out about the young Black.

James gave Sirius a hesitant look. He didn't seem sure about that, even with Sirius being there. He glanced at Lily. She was shaking her head vehemently. "I don't know Sirius. That's a hard thing to agree to. Think about it, you're asking us to give up our son." He shook his head; he didn't feel like he was thinking clearly. He blamed it on the fact that he had no way to judge how accurate Sirius was being, short of administering Vertiserum, which was illegal for him to do.

Sirius sighed. "James, it's one of the best places for him. Think about it, your son is a full-blooded vampire. You don't have the resources to take care of him." He looked around the house, as if he was proving his point. Lily only glared at Sirius. She did not appreciate that at all. As far as she was concerned, she had everything she would need to take care of him.

James bites his lip. He hoped like no tomorrow that he wasn't kicked out for the next words that would spill from his lips. "Lily, it might be a good idea to send Harry there. If he is a vampire, they would have the means we don't. We don't know how to raise a vampire." Lily gave James a look that said he lost his mind. The sad thing was, James felt like he had. He then looked at Sirius, thinking over his words. "Would we have to do this if we had any other children?" He looked truly curious.

Sirius shook his head in reply. "No, this is likely to never happen again. It's so rare that such a thing happens that it's quite shocking. So, any children you would have afterwards would be a normal human child. You would have to take into account the gene would be dormant, but it wouldn't wake up again like it did in young Harry." A look of relief passed over the features of both James and Lily. It appeared that they had been worrying about the exact same thing. This reassured Sirius a bit. He began to believe that he was convincing them both.

Lily threw that thought out of the window the next second. "No, I still won't give up MY Harry to him. Sirius can't take him." She held Harry close to her, making Sirius wonder how the boy didn't wake up with the almost suffocating hold Lily had on him. He didn't get a chance to voice that out, however, as a knock resounded on the door.

Sirius stood up. "I'll get it, I knew to expect someone." He walked out of the room, leaving the parents and child alone for a moment. He walked into the tiny foyer of the home and opened the door. On the other side of the door were two men, one man with black hair and the other man with blonde hair. These two men were Severus Snape and Lucius Malfoy. Sirius nodded to the duo. "Hey," he whispered.

Severus leaned forward and looked around. "What is taking so long? We gave you ten minutes by yourself, and you've passed it by ten." He gave Sirius a look that said that the man had better keep to what he said he would do. Sirius only gave Severus a look; it was basically a battle of the looks.

Sirius sighed and leaned in once again. "Lily is being stubborn; she won't give Harry up for anything." Severus rolled his eyes in exasperation. He couldn't believe one woman was that stubborn. He knew that Narcissa wasn't as bad as this. He wished that humans weren't so temperamental. Sirius stepped aside and let the two men in. They bobbed their heads slightly and walked into the foyer, looking around. Lucius looked at the simple design and small style of the foyer with much distaste. Nobody had told him that he had to act like he thought it was good looking. Sirius closed the door behind the two. He gave them a look that said they better behave themselves.

Lucius walked up to Sirius and leaned in. The man was only taller than Sirius by two inches. "Why have you not used mind control on them yet?" Sirius raised an eyebrow at Lucius and then gave him a look. He thought Lucius would know that he didn't do such things. Of course, he and Lucius both held different opinions on many things.

"I couldn't do that," Sirius said, whispering in quite the low voice. He shook his head once again. He felt that it was useless to try and make Lucius understand, but it didn't mean that he couldn't try. "James is my friend, that means that I can't do such a thing to him." Lucius only gave Sirius a look. Sirius gave him one back; the two had gone back to the battle of the looks. Sirius turned away from him after a moment, scowling. Lucius looked over at Severus with a triumphant look. Severus didn't react, though he had to fight to not roll his eyes at the childishness of it all. Sirius walked back into the living room, Lucius and Severus following in his lead.

"It shouldn't matter you know," Lucius said from behind Sirius. Sirius didn't even acknowledge his response, instead focusing on James and Lily. The two were looking directly at him, well, more like behind him. James had stood up; his position was one of defence. He knew that James had never gotten along with either Lucius or Severus, but he had no idea that Sirius had faked most of the hate. Plus, Severus generally got him back later. It was hard for Sirius not to have fun with that; both Severus and Sirius had grown up with each other.

"It just does," Sirius replied back. He noticed James raising his wand, but Sirius raised his hand in a motion of stopping him. James looked at him peculiarly. He hadn't thought that Sirius would ever do such a thing for those two men. "No James, don't. You can't harm them." James only looked at him, his wand partially raised.

"Why not?" James asked. He stared over Sirius' shoulder for several moments and watched Sirius looked over his own and began to chuckle quite a bit. James looked at Sirius with an eyebrow raised. He didn't see what was so funny about the situation. He tilted his head to the side, but quickly straightened it.

Sirius looked back at James and shook his head in exasperation. "Simple, they're my bodyguards. So I can't have you injuring them." James looked at Sirius skeptically, but lowered his wand. He knew that Sirius wouldn't lie to him; at least that's what he thought about it. He put his wand away and sat next to Lily once again. Sirius also sat down, watching as the other two men stood behind his seat. He had to admit that it did get a little tiring, but he wasn't about to tell them that.

James looked at Sirius with a curious expression. Sure he was told that they were Sirius' bodyguards, but to see them act like it was completely different. He idly wondered why they were Sirius' bodyguards. He knew that none of them liked each other, or so he had thought. "Why are they your bodyguards?" He voiced those thoughts out loud. He knew that Lily was curious herself. She was as surprised as James on that one. They thought they had known Sirius inside and out.

"Oh, I never did explain, did I? Well, the reason they're my bodyguards is that I'm the prince of the Veranuci vampires. Yes, they are in England." He looked at them and saw their stunned expressions. James had relaxed a tiny bit, but that was all. He hadn't gone beyond that small amount of relaxation. Sirius mentally smiled, knowing that at least it was that tiny bit. Sirius then looked at the couple again. "So as you see, Harry would be well taken care of, and there are other children for him to play with that are around his age."

Lily scowled. "This whole idea is a bad one." Sirius sighed. He couldn't believe just how stubborn she was being. It was something that he didn't understand. It didn't make much sense to him. He figured that if Harry was safe, then she would be okay with it. It was then that his mind hit something that left him smiling. He had realized the perfect thing to get James and Lily to give him Harry.

"He would be much safer from the Dark Lord with the vampires than he is now," Sirius said. This instantly got the attention of Lily and James. They looked at Harry and back at them. Sirius could swear that he could see the cogs turning in their brain. This pleased him quite a bit. James leaned over and began speaking to Lily.

"This could be a good idea Lily," James whispered. He looked into her eyes for a moment, hoping she would agree. She was the main thing standing between everyone and Harry's safety. She looked at him, not wanting to agree. Of course, she could see the good in all of it. She knew that it was good for Harry to be protected. Being the son of them could be disastrous to keep. This didn't mean she wanted to give Harry up, only saw that it was a good idea. She looked into James' eyes and saw how they were pleading for her to let Harry's safety win out.

She finally sighed after a moment, feeling like an absolute pushover. "Fine, Harry can live with Sirius. We have to be able to see him." She gave Sirius a hard look. Sirius nodded and stood up, holding his arms out for Harry. The sooner they took him, the better. Lily stood up and gave Sirius a look that could have probably killed. She handed the infant to him, saying, "Goodbye for the moment Harry, mommy will come visit you real soon." Sirius tried to kept himself from rolling his eyes. There was something about Lily that annoyed him quite a bit.

Sirius turned around and handed Harry over to Severus. "Go outside, I'll be out in a moment." Both Lucius and Severus nodded. The turned around and walked out of the room. Lily and James gave him looks as they heard the door close.

"Why did you do that?" James asked. He seemed appalled that Sirius had handed his and Lily's son over to Severus Snape and let the man walk out of the room. In fact, they heard the door to the house close. That meant the boy was out of the house as well.

Sirius looked at them and let out a bedraggled sigh. He knew that was going to happen. The problem was, the next part was about to come up; this was the part he had not been looking forward to. "Because of something I have to do, I'm sorry for this." James and Lily frowned at him. Sirius raised his empty hand and they watched as it glowed a soft blue colour. Seconds later he waved it in front of both of their faces. Their faces became blank almost as if he was rewriting a book.

Sirius concentrated. 'Your memories are mine. You will never remember having Harry as your son, you will know that I had a son, but that's all you shall know. You won't know anything else.' These words ran through his head. Most people would ask why he was doing this instead of just obliviating them. This was permanent. Using vampire magic meant that nobody would be able to break the spell, as it wasn't just locking the memories away; it was literally erasing them and replacing them with something else that would become the real memories of each person. This was the truth, something he wished he wasn't forced to keep hidden. His hand stopped glowing and he lowered it. He watched the two for several moments, their minds finishing the work. Finally, he nodded, satisfied with what he had done. Turning around, he walked out of the room and left. Leaving before they snapped out of their trance, he looked up at the house for the moment and met up with Lucius, Severus and little baby Harry at the end of the walk. The four of them left, not looking back at the house, knowing it would only make what Sirius had been forced to do harder for the man to accept.

A/N: Here is the beginning of this fic. I hope that that I managed to find all the mistakes, as my editor needs a LONG vacation, but thanks to her for looking into this story for me, and hopefully I'll get the ghost to finish chapter five, that way I'll have more posted. Anyways, hope you all like, I hope you'll leave a review. Ja