Death episode: "Welcome to the Tombs"
How it happened: After The Governor locked her away in his torture chamber, he asked Milton to murder Andrea to prove his loyalty. When Milton wouldn't do it, the Governor stabbed him in the gut and let him slowly bleed out so he'd turn into a walker and then devour Andrea on instinct.
Shock factor: Although Milton tried to help Andrea get free and she was able to defend herself once he turned, she was still bit before she put him down. Rick, Michonne, Daryl and Tyreese arrived to find her almost gone, and Rick gave her a handgun after she requested to shoot herself. Andrea spent the second half of Season 3 trying to broker peace between the Governor and Rick's group, hoping to fend off a massacre. She died fighting for her principles, but many fans had turned against her for not taking more forceful action against the Governor.