In the fading light, the woman searched the room for an exit. Apparently, she didn't want to take Jon's word for it that there was no way out. After feeling around for a few minutes, she came to the conclusion that he was right after all.
And by that time, the light was completely gone.
Then suddenly, one of the walls opened, casting a beam of moonlight into the room.
"Did you just do that?" Teresa asked, thinking that Jon must have tripped a switch or something.
"No."
They slowly walked through the opening and out into what appeared to be a cemetery. And quite a spooky one, now that it was nighttime.
"I wonder who opened ..." Teresa began.
"Shh," Jon whispered. "Do you hear that? Where's that coming from?"