Cop gets shot. Cop goes into a coma. Cop wakes up to a world full of zombies. Thus begins Robert Kirkman’s epic graphic novel series, The Walking Dead. Started in 2003, the series depicts Rick Grimes’ (the cop) mission to protect his wife and son in a nightmarish world where the dead lumber around and devour the living. In volume one, Rick wakes up in an abandoned hospital. He makes his way to Atlanta and, through one of those miraculous coincidences seen only in fiction, discovers that his wife and son are still alive in a camp on the outskirts of the city.