Apocalypse Scenario #683 the Box by Mira Grant

I always love the Grant stories and I'm so happy to find more. I can't wait for the third book in the series but I guess I'll just have to do with short stories for now. Zombies are alive (well they exist) and when you die you become one. Now we know why but we can't stop it. No one can stop it all because of well you'll see...