"We won't find any survivors there. We found the director unconscious right here." She gestures about the room. "That means he wasn't even conscious when he got here, otherwise he and Ghiktibur wouldn't even have needed to barricade the door - they'd just go into the director's quarters. It also means he didn't pass the information along. Anyone who took refuge there would need to somehow hack the passage open, and that'd leave clues as to their arrival. Since the barricade WAS here and the two of them were unconscious when we came in, we can safely assume no one else came in after they set the barricade up."
Matsuko sighs for a moment and ponders, "Kyx, do you think this infection could have turned animals into undead? Ghasts are usually humanoid, aren't they?"