S14, E3: A woman is killed after her SUV is carjacked, and when Briscoe and Green finally locate the vehicle, there's a vial of SARS in the back. They find the killer, a young black man who signs a confession, knowing there's enough evidence against him to make his case almost hopeless. His victim, Anna Hopkins, worked for world-renowned biochemist/virologist Dr. Charles Blanchard, and he claims he knew nothing about the traveling SARS vial. But Anna's friend Kate tells a different story. She reveals to the cops that Anna would do anything Dr. Blanchard asked her to. Coincidentally, a SARS epidemic breaks out and the doctors at St. Mark's Hospital isolate "patient zero," a journalist named Janine Wilson, who just returned from a conference on infectious diseases in Toronto.