Sunday Six: No Exit

Today's Sunday Six comes from Chapter Eleven of Rock Killer :

"What the hell are you doing?" a voice growled loudly.
Charlie looked up from the computer to the base of the stairs.  Beatty was standing there, dressed in shorts and a tee shirt.
"I said what are you doing down here?" he repeated, moving menacingly toward her.

Charlie looked around. There were no other exits.