Dak, appearing to walk on all fours but with his cloak covering all exposed limbs, moves forward at a walking pace past Arya, Mai, and Kadaith. Evil is near...Mother will be SO HAPPY to see Dak grow strong...follow Dak if you too seek strength. With the last sentence, Dak's voice turns raspy, as if he's determined to silence the screams of whatever lies ahead.
I think we've done all the searching we can do. If a rune blows me up, so be it, lol. But just in case, one more Perception - (1d20+17) down the hallway as we draw closer to the source of the shriek.