The devil in the library

There was a pursuit going on through a large library, although in the beginning it was confused and unclear who or what was being pursued. We couldn't get a clear look at it as it hid in shadows and scurried from one bolthole to another. As we moved up through the building some of us attempted to name or describe it, speculating on how it might disguise itself in order to ambush or evade us. It was finally cornered on the top floor and we moved in and surrounded it. I was unsure at this point what we would do next, there didn't seem to be any inclination to harm it, only to examine it and keep it under control. At this point I became aware that it was a devil type thing, something with a strong negative energy to it. As it was recognised and observed by us all it appeared to lose strength and power and to be more afraid than threatening. Some of us joined hands to keep it enclosed but it soon became clear that it was not strong enough to pose a danger to us.