Can you solve this riddle? I'll give you a prop if you can.

You wake up in a room, with no windows nor doors nor nothing (you can only see because of a lightbulb in the ceiling) only with wooden walls and a mirror in the mural in front of you.. You try calling for help but nobody answers, and you got nothing on you that can help you escape. Believe it or not, theres one way of escaping. What is the way?

Clues: This riddle has to do with words. Mirror, wood. Oh, another thing, the thing with which you can escape (that was not mentioned in the riddle) was a way of killing people in a famous horror movie (no, you don't kill people in this riddle) that, if you know whats the steps of finding the "thingy".

Notes: Somethings I just added to the riddle bacause, for example, you might answer por asking something like "Then, how can we see?" or you will just say "By callling for help -_-" so I said that you already tried to call for help and that you can see thanks to the light bulb. So some things don't have to do nothing at all with the riddle.

Bonus: I will give you another prop if you tell me what movie I was talking about in the clues section. here is a hint: Leather...(theres some other letters after the word leather.) Hitchicker. Massacre.

So, can you solve it?