I don't really believe in kind of headless spectres. I do believe in 'spirit' and I do believe that there can be spiritual presences in places.
I walked into a house of a rock star who died in quite horrible circumstances many years ago, and you could feel a palpable presence of something quite dark. I'd never experienced that before - I thought, 'Oh well, that's peoples' imaginations' - but it was actually something tangible.
So I do believe that there are things out there and there's a spiritual realm, very much so.