Did The Walking Dead pull a 'Jon Snow' with a beloved character?

If you haven't seen Sunday's episode of TV hit The Walking Dead, run like you're being pursued by a horde of ravenous zombies. But if you have, you are likely one of millions of viewers now grieving a fan favourite. Lately, it has not been death, but ambiguity of death, that has generated the most publicity for television's top-rated shows.