Dr. Susan Rogulski knew in an instant that the petri dish under her microscope had suffered a violent death. The human cells in the dish, Leydig cells, had been destroyed. And Leydig cells are the cells in the body - the male body - that make testosterone. And the destroyer was a virus. She was now sure of that. And then she thought - how stupid that the two men peering over her shoulder wore no masks gloves or gowns.... In this story, told with the voices of young scientists and physicians, the discovery of the virus is only a beginning. They did not know then that the virus had the potential for many surprises and not only scientific ones. If the virus caused an epidemic, who could tell what the consequences would be? Susan knew she needed help, but who to trust with the discovery of a lifetime? And could she, a relative beginner in a new laboratory carry it off? Susan told the two men to clasp their hands behind their backs before looking into the microscope...