(SCP-049's OP)

SCP-049 had always considered himself a professional when it came to curing humanities greatest disease. He was dedicated and determined to create his perfect cure. And he was getting closer with every new patient and every animal test subject he'd been provided by the facility. Unfortunately the facility had not allowed him to work with humans since the death of Dr Hamm, which had been extremely frustrating for him. 

049 had tried to be patient with them. To some degree he could understand their reluctance to accept the seriousness of the situation. After all how was one so posed to react to a disease that they not only could not detect but also failed to understand. Denial was always the first stage of grief and he had seen it time and time again in these humans. He had at one time attempted to explain it to them but all of his efforts had proven futile and he eventually gave up. He didn't have time sit around trying to teach them things that were clearly way above their heads. Frankly he no longer saw the point in it since it was obvious that humans were incapable of treating such an ailment. He was their only hope. He could easily detect the pestilence, he understood it and what's more, he could easily treat it. If only they weren't so determined to hinder his progress. He had allowed himself to be brought to this facility more out of curiosity than anything and had been pleasantly surprised to find like minded individuals. Unfortunately it soon became clear to him that these Doctors were no more aware of the threat than the rest of their unfortunate species. 

He had allowed them to inspect his journals, which held all of the records of his research. They would have easily been able to understand what he was doing if only they had been able to translate it. Unfortunately his language was far more complex than any human language and there was simply no way to translate it. Even he was unable to convert it as his tongue used many complex  specifications and meanings that simply didn't exist in any human dialect. Still he took great pleasure in sharing his findings with them even though he knew they didn't understand. He had hoped that by being open to them they would support his work despite their ignorance and prahaps aid him in his gaol. 

Unfortunately due to the restrictions they'd put on him he was finding it increasingly difficult to improve his cure. Without humans to test it on he had almost no way of telling if the changes he was making were improving anything. His irritation at this unnecessary delay was beginning to get to him and he was beginning to recent them for it. During one of his bad moods he had irritably told Dr Itkin that he was simply bidding his time for an opportunity to leave. There was no longer a reason for him to stay if they denied him the resources to continue his work. Thankfully, Dr Itkin had seen some sense and agreed to let him work with two Human patients. 

The first had been a man terribly afflicted. He had sensed it the moment he entered his cell. He was consumed by it and he had immediately felt the familiar urgency to deal with it. It was his goal in life, his sole purpose was to rid the world of it and he intended to. One poor soul at a time. He hadn't waisted any time in administering his cure to the man. After all the sooner it was treated the better. His other patient had been more complicated. When he first looked at her he was surprised that she seemed uninflected. He had assumed that it was due to the presence of the severely affected male. It made sense that if she was suffering from a less advanced stage, that he would be unable to sense while she was in such close proximity to the severely afflicted. 

As expected, she had fled in fear when she saw what he did to the other D-class. He had made a calculated decision to leave her be while he prioritised his other patient. After all she couldn't run very far and if his first patient was a success than he would be able to unlist his help to subdue her. She hadn't been aware of it but he had been descreetly watching her as he worked and noted how she followed his movements with curiosity. He thought it slightly strange as normally his patients had no interest in the procedure or tried to interfere. Yet she sat and watched silently in the corner without a single disturbance. He had appreciated that. Once the operation was completed he had focused on recording it in his journal as he waited to see if the reanimation would take place. It didn't always work as in order for reanimation to take place he had to get the anatomy and chemical mixture completely accurate. He did his best but as with any operation there was always a risk and it didn't always work. You had been so quiet the whole time that for a moment he generally forgot that you were there. By the time he remembered his patient was already up and walking around. That was when he finally took the time to analyse you. He was surprised to find that you were completely clean. No matter how hard he looked there was absolutely no trace of the disease at all. You were pure. 

After this revolution he had spent a good few minutes simply observing you and quietly documenting your behaviour. In all honesty he wasn't sure what to do with you. He could always use you to further his research. An experiment to see how the cure and reanimation worked on someone not carrying the disease. Than again it seemed an awful shame to waste a healthy specimen. 

He had noticed your increase in fear as the other patient approached you. You weren't in any danger, his assistants were programmed to sense those infected with the pestilence. Since you were so undeniably healthy, you would be ignored by it. Despite this he had called it away when he sensed your anxiety levels increasing. It was than that you had finally noticed his persistent gaze as you looked up at him with caution. He wasn't surprised to see the fear in your eyes. Humans could be such skittish creatures and often exhibited fear when they lacked understanding. 

He had approached you in hope of observing you more closely. Prahaps even getting the chance to run some test just to be sure that the pestilence hadn't mutated in you, making it undetectable to him. Not surprisingly you had reacted negatively to his presence, shrinking away from him. He became slightly more concerned when you started to hyperventilate. That reaction was less typical and he worried that you might make yourself unwell if you didn't calm down. He had attempted to sooth you but was interrupted by the gaurds storming in. 

As usual he watched as they shot down his patient and removed it from his care. He wasn't bothered by this as such. He had completed his task and although he would have preferred them to leave it be, he had descoverd shortly after he arrived here that, that wasn't something the doctors were prepared to do. He watched as you slipped passed him and ran for the doors, than he saw one of the gaurds brutally smacked you across the head. This he found less than acceptable. He didn't believe in such harsh treatment and seeing a woman beaten so mercilessly immediately put him in a bad mood. His follow up interview had been cancelled due to his irritability and he spent the next hour struggling to focus on his research. 

Over the next few hours he found his thoughts wandering back to you. He couldn't quite pinpoint what his interest was with you. While it was true he had been surprised to find you were healthy you weren't the first human to be free from disease. There were others, few and far between, most of which were doctors but there were some. For some reason the more he thought of you the more interested he became. For some unknown reason you fascinated him. Being a man of science, he wasn't one to deny a curiosity an answere and so he took action.  He requested that the Doctors allow him to see you again. Dr Itkin seemed so shocked by his request which he found quite amusing. There seemed to be so few things that surprised these doctors, much like himself. The doctor had asked him why but he had evaded the question by simply stating that the reason held little significance. It wasn't a lie as such. To be honest even if he had a good answer he wouldn't have shared it with him. It was simply a natural curiosity. Yes that had to be it.

(I think I managed to keep SCP-049 in character, obviously no one really knows exactly how he thinks but I spent a lot of time dissecting his official interview logs to get as accurate as possible. Hope you like it.)