Kit appeared outside the tower and

There were two men in the front seats of the helicopter. One of them, presumably the copilot, opened a door and got out, carrying a large suitcase. He was a stocky man of medium height, wearing sunglasses. Ducking his head, he moved away from the aircraft. A moment later, Kit appeared outside the tower and walked across the snow toward the helicopter. "Stay calm, Kit," Toni said aloud. Frank grunted. The two men met halfway. There was some conversation. Was the copilot asking where Nigel was? Kit pointed to the control tower. What was he saying? Nigel sent me to make the delivery, perhaps. But it could just as easily be The police are up there in the control tower. There were more questions, and Kit shrugged. Toni's mobile rang. It was Odette. "The helicopter is registered to Adam Hallan, a London banker," she said. "But he's not on board." "Shame." "Don't worry, I wasn't expecting him. The pilot and copilot are employees of his. They filed a flight plan to Battersea Heliport—just across the river from Mr. Hallan's house in Cheyne Walk." "He's Mister Big, then?" "Trust me. We've been after him for a long time." The copilot pointed at the burgundy briefcase. Kit opened it and showed him a Diablerie bottle in a nest of polystyrene packing chips. The copilot put his suitcase on the ground and opened it to reveal stacks of banded fifty-pound notes, closely packed together; at least a million pounds, Toni thought, perhaps two million. As he had been instructed, Kit took out one of the stacks and riffled it. Toni told Odette, "They've made the exchange. Kit's checking the money." The two men on the airfield looked at each other, nodded, and shook hands. Kit handed over the burgundy briefcase, then picked up the suitcase. It seemed heavy. The copilot walked back to the helicopter, and Kit returned to the control tower. As soon as the copilot got back into the aircraft, it took off. Toni was still on the line to Odette. "Are you picking up the signal from the transmitter in the bottle?" "Loud and clear," Odette said. "We've got the bastards."