5 AM

THE snowplow was a Mercedes truck with a blade hooked to its front attachment plate. It had "Inverburn Plant Hire" on its side and flashing orange lights on its roof, but to Toni it looked like a winged chariot from heaven.

The blade was angled to push the snow to the side of the road. The plow quickly cleared the drive from the gatehouse to the main entrance of the Kremlin, its blade lifting automatically to clear speed bumps. By the time it stopped at the main entrance, Toni had her coat on, ready to go. It was four hours since the thieves had left—but if they had got stuck in the snow, they could still be caught.

The plow was followed by three police cars and an ambulance. The ambulance crew came in first. They took Susan out on a stretcher, though she said she could walk. Don refused to go. "If a Scotsman went to hospital every time he got a kick in the head, the doctors could never cope," he said.

Frank came in wearing a dark suit with a white shirt and a tie. He had even found time to shave, probably in the car. Toni saw the grim expression on his face and realized with dismay that he was spoiling for a fight. No doubt he resented being forced by his superiors to do what Toni wanted. She told herself to be patient and avoid a showdown.

Toni's mother looked up from petting the puppy and said, "Hello, Frank! This is a surprise. Are you and Toni getting back together?"

"Not today," he muttered.

"Shame."

Frank was followed by two detectives carrying large briefcases—a crime-scene team, Toni presumed. Frank nodded to Toni and shook hands with Carl Osborne, but spoke to Steve. "You're the guard supervisor?"

"Aye. Steve Tremlett. You're Frank Hackett, I've met you before."

"I gather four guards were assaulted."

"Me and three others, aye."

"Did all the assaults take place in the same location?"

What was Frank doing? Toni wondered impatiently. Why was he asking trivial questions when they needed to get going right away?

Steve answered, "Susan was attacked in the corridor. I was tripped up in about the same place. Don and Stu were held at gunpoint and tied up in the control room."

"Show me both places, please."

Toni was astonished. "We need to go after these people, Frank. Why don't you leave this to your team?"

"Don't tell me how to do the job," he replied. He looked pleased that she had given him an opportunity to put her down. She groaned inwardly. This was not the time to rerun their marital conflicts. He turned back to Steve and said, "Lead the way."

Toni suppressed a curse and followed along. So did Carl Osborne.

The detectives put crime-scene tape across the corridor where Steve had been tripped up and Susan had been blackjacked. Then they went to the control room, where Stu was watching the monitors. Frank taped the doorway.

Steve said, "All four of us were tied up and taken inside the BSL4 facility. Not the laboratory itself, just the lobby."

"Which is where I found them," Toni added. "But that was four hours ago—and the perpetrators are getting farther away every minute."

"We'll take a look at that location."

"No, you won't," Toni said. "It's a restricted area. You can see it on monitor nineteen."

"If it's not the actual laboratory, I presume there's no danger."

He was right, but Toni was not going to let him waste more time. "No one is allowed past the door without biohazard training. That's the protocol."

"Hell with your protocol, I'm in charge here."

Toni realized she had inadvertently done what she had vowed to avoid: gone head-to-head with Frank. She tried to sidestep the issue. "I'll take you to the door,"

They went to the entrance. Frank looked at the card reader, then said to Steve, "I'm ordering you to give me your pass."

Steve said, "I don't have a pass. Security guards aren't allowed in."

Frank turned to Toni. "Do you have a pass?"

"I've done biohazard training."

"Give me your pass."

She handed it over. Frank waved it at the scanner then pushed the door. It remained locked. He pointed at the small screen on the wall. "What's that?"

"A fingerprint reader. The pass won't work without the correct fingerprint. It's a system we installed to prevent foolish people getting in with stolen cards."

"It didn't stop the thieves tonight, did it?" Having scored a point, Frank turned on his heel.

Toni followed him. Back in............