[Technically he didn't offer to help, but now that Carlisle thinks about it, it certainly did come off that way. This fellow seems more than a little unhinged, and may be delusional, but—]

It is a part of my duty to my goddess to deal with possessions, exorcising unwelcome beings and sealing them accordingly. Malcontent demons and spirits ought not be allowed to wander this plane, lest they cause more trouble for those living here.