"Did he look in?"
"I don't think so. He couldn't have seen you through the screen."
"If he tries to come in...?"
"Slip through the door behind you."
Don made to creep away from her. She laid a hand on his arm. "Wait!"
There was no further sound from the man outside.
"He's not coming in," Pen whispered. "He's out there to cut off your escape."
A tremendous rat-tat-tat resounded through the empty halls.
"I shouldn't have slept!" murmured Don.
"It's all right!" whispered Pen. "I intended you should stay here."