Test Tube Racks in School Science Lab

Rows of clear glass test tubes secured in metal racks line the lab’s central counters, their uniform sterility broken only by the scorch marks on the windowsill behind them. The tubes appear empty but organized for experiments, their glass gleaming under the flickering fluorescent lights. The Doctor and Ace move past them unconsciously, their focus on the burn marks and Dalek pursuit, the lab’s mundane equipment contrasting sharply with the alien invasion unfolding.