And life had improved. Stanley quickly promoted her from head of security to facilities manager and gave her a raise. She bought a red Porsche.

When she mentioned one day that she had played squash for the national police team, Stanley challenged her to a game on the company court. She beat him, but only just, and they began to play every week. He was very fit, and had a longer reach, but she was twenty years younger, with hair-trigger reflexes. He took a game from her now and again, when her concentration slipped, but in the end she usually won.

And she got to know him better. He played a shrewd game, taking risks that often paid off. He was competitive, but good-humored about losing. Her quick mind was a match for his brain, and she enjoyed the cut-and-thrust. The more she got to know him, the better she liked him. Until, one day, she realized that she did not just like him. It was more than that.

Now she felt that the worst part of losing this job would be not seeing him any longer.

She was about to head down to the Great Hall, to meet him on his way in, when her phone rang.

A woman's voice with a southern English accent said, "This is Odette."

"Hi!" Toni was pleased. Odette Cressy was a detective with the Metropolitan Police in London. They had met on a course at Hendon five years ago. They were the same age. Odette was single and, since Toni had split up with Frank, they had been on holiday together twice. Had they not lived so far apart, they would have been best friends. As it was, they spoke on the phone every couple of weeks.

Odette said, "It's about your virus victim."

"Why would you be interested?" Odette was on the antiterrorist team, Toni knew. "I suppose I shouldn't ask."

"Correct. I'll just say that the name Madoba-2 rang an alarm bell here, and leave you to work it out."

Toni frowned. As a former cop, she could guess what was going on. Odette had intelligence indicating that some group was interested in Madoba- 2. A suspect might have mentioned it under interrogation, or the virus had come up in a bugged conversation, or someone whose phone lines were being monitored had typed the name into a computer search engine. Now, anytime a quantity of the virus went astray, the antiterrorist unit would suspect that it had been stolen by fanatics. "I don't think Michael Ross was a terrorist," Toni said. "I think he just became attached to a particular laboratory animal."

"What about his friends?"

"I found his address book, and the Inverburn police are checking the names right now."

"Did you keep a copy?"

It was on her desk. "I can fax it to you right away."

"Thanks-it will save me time." Odette recited a number and Toni wrote it down. "How are you getting on with your handsome boss?"

Toni had not told anyone how she felt about Stanley, but Odette was telepathic. "I don't believe in sex at work, you know that. Anyway, his wife died recently-"

"Eighteen months ago, as I recall."

"Which is not long, after nearly forty years of marriage. And he's devoted to his children and grandchildren, who would probably hate anyone who tried to replace his late wife."

"You know the good thing about sex with an older man? He's so worried about not being young and vigorous that he works twice as hard to please you."

"I'm going to have to take your word for that."

"And what else? Oh, yes, I almost forgot, ha ha, he's rich. Listen, all

I'm going to say is this: if you decide you don't want him, I'll have him. Meanwhile, let me know personally if you find out anything new about Michael Ross."

"Of course." Toni hung up and glanced out of the window. Stanley Oxenford's dark blue Ferrari F50 was pulling into the chairman's parking space. She put the copy of Michael's address book into the fax machine and dialed Odette's number.

Then, feeling like a criminal about to be sentenced, she went to meet her boss.

THE Great Hall was like the nave of a church. It had tall arched windows that let in shafts of sunlight to make patterns on the flagstone floor. The room was spanned by the mighty timbers of an open hammer-beam roof. In the middle of this graced space, incongruously, was a modern oval reception desk with high counters. A uniformed security guard sat on a stool inside the oval.

Stanley Oxenford came through the grand entrance. He was a tall man of sixty with thick gray hair and blue eyes. He did not look the part of a scientist-no bald dome, no stoop, no spectacles. Toni thought he was more like the kind of actor who plays the general in a movie about the Second World War. He dressed well without seeming stuffy. Today he wore a soft gray tweed suit with a waistcoat, a light blue shirt, and-out of respect for the dead, perhaps-a black knitted tie.

Susan Mackintosh had placed a trestle table near the front door. She spoke to Stanley as he came in. He replied briefly then turned to Toni. This is a good idea-buttonholing everyone as they arrive and asking when they last saw Michael."

"Thank you." I've done one thing right, at least, Toni thought.

Stanley went on: "What about staff who are on holiday?"

"Personnel will phone them all this morning."

"Good. Have you found out what happened?"

"Yes. I was right and you were wrong. It was the rabbit."

Despite the tragic circumstances, he smiled. He liked people to challenge him, especially attractive women. "How do you know?"

"From the video footage. Would you like to see it?"

"Yes."

They walked along a wide corridor with oak linenfold paneling, then turned down a side passage to the central monitoring station, normally called the control room. This was the security center. It had once been a billiards room, but the windows had been bricked up for security, and the ceiling had been lowered to create a hiding place for a snake's nest of cabling. One wall was a bank of television monitors showing key areas of the site, including every room within BSL4. On a long desk were touch screens controlling alarms. Thousands of electronic checkpoints monitored temperature, humidity, and air management systems in all the laboratories-if you held a door open too long, an alarm would sound. A guard in a neat uniform sat at a workstation that gave access to the central security computer.

Stanley said in a surprised tone, "This place has been tidied up since last I was here."

When Toni had taken over security the control room was a mess, littered with dirty coffee cups, old newspapers, broken Biros, and half-empty Tupperware lunch boxes. Now it was clean and tidy, with nothing on the desk except the file the guard was reading. She was pleased Stanley had noticed.

He glanced into the adjacent equipment room, once the gun room, now full of support devices, including the central processing unit for the phone system. It was brightly lit. A thousand cables were clearly labeled with nonremovable, easy-to-read tags, to minimize downtime in case of technical failure. Stanley nodded approval.

This was all to the good, Toni felt; but Stanley already knew she was an efficient organizer. The most important part of her job was making sure nothing dangerous escaped from the BSL4 lab-and in that she had failed.

There were times when she did not know what Stanley was thinking, and this was one. Was he grieving for Michael Ross, fearful for the future of his company, or furious about the security breach? Would he turn his wrath on her, or the dead Michael, or Howard McAlpine? When Toni showed him what Michael had done, would Stanley praise her for having figured it out so quickly, or fire her for letting it happen?

They sat side by side in front of a monitor, and Toni tapped the keyboard to bring up the pictures she wanted him to see. The computer's vast memory stored images for twenty-eight days before erasing them. She was intimately familiar with the program and navigated it with ease.