Nothing but darkness. You have found yourself in a pitch-black room, but you cannot remember how you came here. For that matter, you are not entirely certain who you are. Or what you are, or even what planet you are from.
You cannot see anything in the gloom. The room is eerily silent, your breathing and your footsteps the only sound. You are alone here in the darkness...or at least you think you are alone.
As you try desperately to figure out just how you got here and how you are going to find your way out of here, a sudden light attracts your attention. A single torch appears to light itself. Are you not alone here after all?
The torch's light is very dim. You still cannot make out most of the room, but there is just enough light to illuminate a staircase, which leads both upwards and downwards into apparently unrelieved darkness.