What happens if a monster gets trapped in the basement with no way up?
It isn’t much of a horror movie if the heroes have perfect safety. Add the following rule: “If there is no possible way for a monster in the basement to reach heroes on upper floors, or for a monster on the upper floors to reach heroes in the basement, the traitor may on his turn go through the Room stack until he finds the Stairs from Basement tile and put it into play next to any open basement doorway.” This rule does not apply if the scenario allows monsters to explore new rooms.
