idk once in a abandoned hotel some glass started cracking on its own. but this could ahve been exsplained with the glass was old probably all reday had a crack in it and we opened the door letting in the below 0 air.

another time me my brother and our 2 friends all heard footsteps above us we took the only staircase up checked every room and never found anyone. but i also thought this could be esplained with maybe they were the next floor up and the next floor had multiple staircases.

ive done a lot of urban exsploring in abdoned hotels and never thought i saw a ghost. but if i encounter one im gonna start making salt bullets like in supernatural.