Balthazar examines a body at a derelict toy store and determines that the victim died from an accelerated version of the bubonic plague. Having been exposed to the virus, Balthazar locks himself inside to stop its spread, but will Bach's team be able to find the cure before he ends up another victim?

Balthazar examines a dead woman dressed as Snow White and determines she was shot, then buried alive. A USB drive hidden in her wounds reveals portraits of seven missing people, including the victim's son.