“Quietly,” he whispered.
Hand in hand they hurried along the corridor towards a small door. Paul pushed it open while Carter checked to see no-one had discovered them.
“Up here,” Paul whispered.
The flight of stairs seemed endless. Paul was used to them, but the exertion soon had Carter struggling for breath. After weeks of physical inactivity, the stairs presented a major hurdle.
“How much further?” he asked.
“Nearly there,” said Paul.
Carter watched his feet climb one after the other up the stairs, almost mesmerised by the rhythmic action. He was relieved when he looked up to see Paul pushing a great wooden door open and the stairs being flooded with a warm, bright light.
The light, as welcoming as it was, assaulted Carter’s eyes. He squinted and shielded them with an arm as he entered Harrison’s laboratory.
“You’ll soon get used to it,” said Paul, pushing the door shut and locking it.
“It’s so bright!” said Carter.
Paul put his arms around Carter.