the door locks
You and Dave follow when you get about half way along the door behind
you slams. Dave runs over and tries the door, it's locked "this
place really is haunted" he whispers. There is a bang up ahead
and Barbra runs up to see what it is. She is about ten metres ahead
when the roof between you collapses. "are you alright" Dave
yells, there is no answer.
