Warning: This Walking Dead Season 4 post contains spoilers. Please wait until after watching, before reading further.
Toward the end of The Walking Dead Season 4 Episode 3 (Isolation), Rick figures out that Carol is the person who burned Karen and David. Ultimately what she did kept everyone safe, but it has Tyreese pissed off and demanding justice.
To talk more with me about The Walking Dead Season 4 Episode 3, check out my full post on the episode, to let me know what you think.