Extend the Story - Add a Room

You throw the grenade, but you stagger and trip. The grenade explodes and you die. But this, you wake up in your hotel's bed.
You decide to get out of the hotel, and research about the Infinite Hallways you just saw in your dream at the library.
But google, bing, etc does not show any sign of this other than saying "No results." You decide to sneak somewhere where people won't see you nor cameras and sleep there for the night.
Now, you are in the hallway. But this time, You see a line of people.
Who will you ask?

Zuo