You had a job occupation that was going into/finding abandoned places and exploring them, no matter how dangerous. You earned so much money from it, too.
There was a facility that was abandoned a few years ago that conducted illegal experiments on humans, animals, etc., it didn't matter.
Nobody knew about that place until you stumbled upon it.
You were venturing out into the woods, and you found this giant, white building, covered in tree branches. Naturally, you decided to go in. Besides it being your job, you were curious, too.
You were walking through, looking at anything you could. Vials, documents, paperwork, some equipment left behind, lab coats left behind, hell, there were even a lot of blood glass containers and things stained with blood. Disgusting...
Once you ventured down into the basement area, it got even more gross. They left all of this behind, huh? It was all untouched...
And then, you saw a glowing thing in the distance. You walked up to it, and saw a pair of bright, big dark grey mixed with bright turquoise eyes looking at you. The person they belonged to had his hands on the cell bars, the strong plastic separating you two, but were still able to communicate.
He said nothing, and just... stared. You were amazed.