I think I read somewhere that Penumbra's dagger was supposed to be in the desk in the bldg with the guards - the same place where the 'special' lockpicks were for the thieve's guild quest. But whenever I go in there there is nothing but a key. The first couple times I checked for the lockpicks it was the same way, but after a while they showed up, so I have waited (left Vedistis and returned), but they are still not there. Any help??