Two women guards came up the corridor, running hard. Foyle swung the sledge and dropped them. He was near the head of the corridor. Before him stretched a long perspective of cell doors, each bearing a glowing red number. Overhead the corridor was lit by glowing red globes. Foyle stood on tiptoe and clubbed the globe above him. He hammered through the socket and smashed the current cable. The entire corridor went dark... even to goggles.