Short film idea

My Film would be set in the college and a student who gets lost arrives at a secret room which looks like it has been abandoned. The student would reveal a secret about the staff at the college. I dont know what kind of props would be used it depends what is available at the time and what we can fit into the story. There only needs to be one actor or maybe more if we have one of the staff confront the student however this will be harder to shoot since we cant really have someone play an adult.

I am not sure what the student would reveal yet and idea I have had is that someone in the college is hiding evidence of a criminal act in the abandoned area of the college,