Zombie Attack Toronto

What if ...you are out in the woods and come across a carcass of a deer violently ripped apart? What if ...you have on video that deer being ripped apart and when you go to take it to the authorities no one can be found? I don't mean just the police station is empty but the entire town is deserted. What if ... as you approached the fifth-largest Metropolis in North America you find it too, deserted? These are the situations the narrator of this story finds himself in. Where have all the people gone?