"Hey, hey, wait a moment!" Molgrug hisses. "We haven't finished interrogating the butler yet!"
Leaving the servant to Creed's mercy, Molgrug trails after those heading upstairs. "I still had a few questions for him," he complains. "Just basic stuff: layout of the house; interpersonal relationships; local brewing and distilling facilities; regional geopolitics... that sort of... hmm. Well, this looks interesting."
He eyes the dead body and, then, seeing where the others are looking, the strange glyphs and symbols.
OoC
Molgrug can of course use his superior knowledge of all things magical to attempt to identify (anything useful about) the glyphs, chanting, or both. I won't try a Detect Magic just yet - perhaps he can glean something just from looking and listening.
Statblock
Senses: Darkvision 60ft, Spot/Listen +7, Init: +2
HP: 9/9
AC: 15, Touch: 11, Flat-footed: 13
Saves: Fort +4, Ref +4, Will +5 (+2 vs mind-affecting spells, +4 vs poison)
Spells: Command, Resurgence, Obscuring Mist , Detect Magic, Read Magic, Light
Special: None