Marvin Campbell

An elderly ex-serviceman and widower looks to avenge his best friend's murder by doling out his own form of justice.

Twenty-eight days after a killer virus was accidentally unleashed from a British research facility, a small group of London survivors are caught in a desperate struggle to protect themselves from the infected. Carried by animals and humans, the virus turns those it infects into homicidal maniacs -- and it's absolutely impossible to contain.