"Thanks for the input, sport," Sinclair says, pulling the door open and stepping inside to investigate further. He drops to his hands and knees to feel around the floor for anything that might push up or slide away. Nothing.

He stands up again and brushes off his pants. "There's got to be some way of cutting this thing off from its power supply... how does this thing stay running anyway?" Because if they can find that, they'll at least have a trail to follow.