[h3]White Church Workshop, Upper Cathedral Ward, high above western Yharnam – Ophelia[/h3]
Though Dietrich seemed entirely unsurprised and unconcerned about Ophelia revealing where she had received blood treatment, which she would probably assume revealed a great deal to him, the First Hunter reacted very strongly when she mentioned the corpses with scourge-ravaged eyes. His eyes widened and his smile, which had endured undaunted until then, vanished in an instant as the man's posture abruptly slouched. He raised both hands to his face and covered his mouth with them, looking deeply disturbed by what he had just heard.
The revelation of the message they had found on the blackboard prompted no reaction in him, though he still seemed troubled; he only collected himself and refocused when Ophelia moved on to mention the clinic coming under attack by Pallid and his minions. There was a small twitch at the corner of his mouth at the mention of Soulkeeper, but otherwise he did not seem to outwardly react to any of the rest she had to say, but rather spent the time recovering from what he had heard.

“I see,” he said, clearing his throat uncomfortably. “I... I'm sorry, of course you would have questions and want answers after all that, though it seems you have figured out some of it already. I am very happy you came to me as soon as you did, Miss Ophelia, though...”
He sighed and shook his head despondently. “I wish these others you speak of had come too, and I will need to have the others at the clinic examined. We need to know what went wrong, why some didn't make it.” He let out a short, mirthless chuckle. “I suppose you must think me responsible for all of this due to this... 'message' you read. I didn't write it, but you are not wrong; I was supposed to oversee this little experiment, and I helped to arrange it. I will answer any of your questions that I can, but if you want to know everything there is to know, you will have to speak with the vicar.”

Paying close attention as she were, Ophelia would notice that the occurrence earlier at the entrance to the workshop had indeed not been a unique one. Every four or five seconds, even standing mostly still as he did now, a faint, weak little guidance sprite would appear somewhere near Dietrich, exist for half a second, then sputter and vanish.