Finders Keepers

The finders keepers rule is getting out of hand. Things are going missing – objects that the misfit monsters need. This is causing disharmony between the misfit monsters, and everyone is on edge looking for someone to blame. That someone is Nit.
Nit, part vampire, part elf, with a little bit of shade, hasn’t been taking objects despite being blamed.
How can he solve this mystery, find the culprit before he’s locked away and charged with a crime he’s not committed?