21 Blink-and-You'll-Miss-Them Easter Eggs That Have Popped Up in The Walking Dead

In season three, the Governor is trying to convince Andrea why he has to go after her friends, saying, "Your friends killed six good people." He goes on to list the names of the dead, and "Heisenberg" — Walter White's drug-dealing alter ego — is one of them. Could Walter have survived the apocalypse and ended up in Woodbury?