MCMURDO SOUND WAS LIKE a big country town. Carl guessed only a few tens of thousands of people lived here, judging by its size. It was mid-morning by the time they’d got out of the spaceport and into the city. The streets were quiet. Not many shuttles flew to Antarctica. They’d had to wait precious hours for the next available flight from London. Thankfully, Sayen didn’t seem to have moved in all that time, according to the dot on the interface that showed the location of her tracker. Carl guessed the Shadows must have decided to keep her in one place for the time being. That was what he hoped anyway. He didn’t want to think about the other possible reason for her lack of movement. “You trained here, didn’t you?” Carl asked Harrington as they left the spaceport. “Yep,” she replied. “So

