Does Schurke find anything in the sarcophagus? Trick doors, valuable looking items, precious metals or gems, spell components, scrolls, traps, last will and testament, or anything else of note? I take 20 if I have to. I have Darkvision.
If nothing else, I'll take a piece of Borkon's hair and hide it so we can use it later to Scrye or Legend Lore.