OOC
Spoiler
Yup, good luck killing all the other players.
Oh, but I'm afraid they haven't even a thieves guild that you know of. Perhaps later when you return you might be able to sniff out a certain guild...
Alas, it seems the culprit didn't resort to magic to flee from the scene, but how did he did it? Looking up along the wall you notice several window ledges that an acrobat might have been able to use to escape, still, the possibility seemed unlikely.