UnGames:You Have Sinned/Door

You look through the door. There is only a hallway that leads to a small nondescript white door (using "white" makes it descript, now, doesn't it?). There is also another door to your left. A strange sound comes from it. What do you do?

>>Go back to the waiting room

>>Go through the door at the end of the hall

>>Go through the door on your left