The Final Doom. The Accursed North, #2

Felix Kurtsius discovered that the Change Plague was being dispersed as part of a deliberate attack. Toronto appeared to be the epicentre for the infection, which targeted Canada preferentially. He escaped to Toronto after werewolves began purging the rural areas of humans, only to discover insidious forces at work. In a race against the clock, Felix and his friends must use all their skills to unravel the forces behind the werewolves, and prevent the destruction of humanity.
A novel of modern horrors, ancient prophesies, data analysis, and nerds who save the world.