A/N: Just wanted to say a quick thank you to everyone who read, especially those who told me to continue! I hope you enjoy the next part, and I will try my best to upload every other day!

Chapter One

"Once again, Sebastian, it's perfect." Tracing his fingers over the battered dummy target, Jim lightly prodded at each of the bullet holes. "I really don't think there's any way for you to improve in these conditions." He paused, turning on his heel to face his new pet with an almost childlike smile. "How do you feel about live target practice, Sebby?"

Sebastian ran a hand through his hair, exhaling shakily through his mouth. "I'm not so sure, boss... If I hit them then they're going to bleed, and I-... I can't afford to let my concentration falter. Not if you want me to be going outside and mixing with other humans to carry out jobs for you." Flashes of the night his boss saved him came flooding into his vision, and Sebastian grimaced as a deep feeling of shame manifested in the pit of his stomach. He had been a mess. An uncontrollable, starving, abhorrent mess. And he never wanted to feel that way again. At least with using a rifle he had control over the death, and was consciously choosing to take someone's life rather than being overruled by thirst. Shooting was so much less personal, and Sebastian was more than used to handling firearms from his days as colonel. He dug his nails into the palm of his hand; he couldn't afford to think back to then. He'd blocked it out until now, and frankly he didn't want to remember how the night he got attacked by that bloodsucking parasite went down.

"You'll have to get used to the smell of fresh blood eventually, Sebby." Jim mused, his eyes dancing around the training centre. His gaze stopped at one of the few guards he'd allowed into the facility, and he jerked his head to the side, watching intensely as the guard came to stand in front of him. "People have silly little accidents all the time. A papercut, a fall, a graze... Isn't that right, Fletcher?"

The guard- Fletcher- nodded slowly. Jim could see the fear shimmering in his eyes and oh, it was beautiful. He sidled up to his guard with a sweet smile, resting a hand on his shoulder in a gesture that in any other situation would have been seen as comforting, but the devilish taunt behind Jim's smile made the simple touch burn with a cruel mocking of what was to come.

"You have to be prepared for anything, Sebastian. Someone will be bleeding to some degree wherever you go. Think of this as a lesson in self control."

Fletcher flinched as Jim patted him on the cheek, the patronising contact making bile rise in his throat. Feeling a slight scratch, the guard looked down to see a miniscule puncture mark where Jim had pushed a drawing pin through the skin on the back of his hand. Blood rushed to the surface, and Fletcher hastily brought his hand to his mouth, sucking at the scratch before Sebastian could notice.

But it was too late.

That single note of blood sang to Sebastian, and who was he to ignore its call?

Jim turned away, idly looking through his phone messages as chaos exploded behind him in a fit of screams and sobs. "We're going to have to work on your self control, 'Bastian." He chided, not looking up from his phone screen. "Otherwise I'm going to have to keep you on a silver leash."

The sniper had definitely come a long way from the hollow shell of a person he was a few months back, but Moriarty knew that he would have to keep working at him for a few months more before Sebastian was fit for showing off. Yes, he was showing incredible agility, strength, and accuracy in his training, but the poor man needed rebuilding. He needed to be guided and molded so that he wasn't afraid of his newfound abilities. He needed to be shaped into the perfect weapon that Jim knew he could be.

His perfect weapon.

"Sebby, are you coming with me to visit him or not?" Jim whined, hands buried deep in his pockets. He'd been stood outside his sniper's room for ten minutes now, trying to coax him out. "C'mon, you know I'm not going to let you hurt him..."

Four long months had passed since the 'incident' with Fletcher, and Sebastian was so much more accustomed to his new life now. It was almost as though he'd been a vampire all his life. Well, apart from the odd slip up.

"Boss, you know that you can't hold me back if I snap... How do you know that I'm going to be able to keep myself under control?"

"I know, because for the past seven months you have proven to me time and time again that you're controllable if you've fed the week before." Jim toyed with the small black box in his pocket. "Your last full feed was ten days ago, but I have something here to make sure that you're on top form."

Interest piqued, Sebastian slowly opened the door to his room, sighing heavily. "I don't want to hurt him, not with the way you talk about him."

"I'm not going to let you hurt him, Sebby. Besides, he's got a pet that I don't care much for. You could always attack him." Jim flipped the small, velvet box open, revealing the syringe that lay inside. He slowly removed it from its case, turning it over in his hands. His voice suddenly took on a warning tone. "Don't expect this to become a frequent affair, 'Bastian. I just don't want you hurting my darling detective." Rather nonchalantly Jim began to draw blood from his arm, watching Sebastian closely as the syringe filled.

He was completely entranced.

"You really shouldn't do this, boss." Sebastian felt a lump rising in his throat, and grit his teeth against the feeling. He was right; Jim really shouldn't have done that. An overwhelming desire to just rip the needle from his arm and tear his boss' flesh apart crashed into him, and it took every ounce of his willpower to hold himself back.

"Too bad." Jim disposed of the needle, handing Sebastian the small vial of his blood. "Drink up."

The moment a drop of blood kissed his tongue, Sebastian was dead to the world. Never before in either of his lives had he tasted something so exquisitely divine. His body instantly warmed, and a healthy glow spread across his ashen skin as his body absorbed the nutrients from the small mouthful of blood. It took all of Sebastian's restraint to not ask his boss for some more; he knew he was incredibly honoured to have been offered the vial and he didn't want to ruin that, so instead he focused on the sweet, tangy taste that coated his mouth.

"Thank you, boss."

"You're welcome." Jim studied Sebastian's face and struggled to hide his amusement at the expression he was making. He looked like a child who had found a secret stash of candy. Clearing his throat to disguise a chuckle, he linked arms with his sniper, a newfound spring in his step as he lead Sebastian out of the training facility for the first time in seven months. "You're going to love Sherlock, Sebby. But I want you to try to get close to his pet. Johnny boy is the key to unlocking our first game together~."

A/N: So, what did you think? I'd love it if you left a review to let me know; they encourage me to keep writing!