WHIRR! The robotic seal sped away. Zac raced after it across the ice. But running was impossible! Zac slipped. He slid about. He fell flat on his bum a hundred times over. Where is the seal heading? Towards the seal research station, it looked like. Does that mean the researchers are up to no good, after all? wondered Zac. By this time, he was panting hard. The GIB training manual said that a spy must be in peak physical condition at all times. And Zac was. But still, he was no match for a machine. He was exhausted. They neared the research station. Out-side was a row of gleaming new skidoos. There was no-one around. The first skidoo even had keys dangling from the ignition. Obviously the seal researchers weren’t expecting company. I’ll have it back before they even know I’ve taken it, thought Zac. And just to make sure… A storage chest of firewood stood beside the skidoos. With all his might, Zac dragged the heavy chest in front of the research station door. The researchers would be locked in, at least for a while.