Tristan heard the scream and his blood ran cold. He threw himself down the stairs, literally flew, to the bottom, panting.
"Taff!" he yelled, looking around in the blinding darkness. He felt along the wall to find the lightswitch, gasping, pulling in a few lungfulls of dust at the same time.
"Taff? I'm here-Taffy? Where are you?" he pushed boxes out of the way, covering himself in dust that clung to his panic sweat.