An epidemic looms. Anne-Marie Leclerc, director of the Emergency Public Health Laboratory, must deal with an outbreak, an overzealous cabinet minister, and a media storm. To top it off, she discovers that her husband has been deceiving her. All this is trivial compared to what’s in store...

The disease continues to spread silently. For now, Anne-Marie has other worries. She sets out to prove to the Minister that her lab is effective. She’s still hesitant to confront Marc. Françoise organizes a celebration for Xavier. It’s a small gathering – with immense consequences.

The dead can’t talk. Anne-Marie needs to know if people close to the victims are suffering from the disease. The clock is ticking. The lab team does all it can to break the chain of transmission and discover the nature of the virus.

The 200th COVA death is about to be announced. How can public panic be minimized? Montrealers are fleeing the city and ignoring symptoms. Anne-Marie needs a new strategy.