While the men cleaned up, she looked around, searching for clues as to why this had happened. As she had feared, Michael had stolen the experimental drug because he knew or suspected he had been infected with Madoba-2. But what had he done to expose himself to the virus?

In the shed there was a glass case with an air extractor, rather like an improvised biosafety cabinet. She had hardly looked at it before, because she was concentrating on Michael, but now she saw that there was a dead rabbit in the case. It looked as if it had died of the illness that had infected Michael. Had it come from the laboratory?

Beside it was a water bowl labeled "Joe." That was significant. Laboratory staff rarely named the creatures they worked with. They were kind to the subjects of their experiments, but they did not allow themselves to become attached to animals that were going to be killed. However, Michael had given this creature an identity, and treated it as a pet. Did he feel guilty about his work?

She stepped outside. A police patrol car was drawing up alongside the biohazard van. Toni had been expecting them. In accordance with the Critical Incident Response Plan that Toni herself had devised, the security guards at the Kremlin had automatically phoned regional police headquarters at Inverburn to notify them of a red alert. Now they were coming to find out how real the crisis was.

Toni had been a police officer herself, all her working life, until two years ago. For most of her career, she had been a golden girl-promoted rapidly, shown off to the media as the new style of modern cop, and tipped to be Scotland's first woman chief constable. Then she had clashed with her boss over a hot-button issue-racism in the force. He maintained that police racism was not institutionalized. She said that officers routinely concealed racist incidents, and that amounted to institutionalization. The row had been leaked to a newspaper, she had refused to deny what she believed, and she had been forced to resign.