Who did Carol kill on the walking dead?

Carol's confession to Tyreese at the end of the episode was heartbreaking; she hated that she had killed Karen and David, and she told Tyreese to do what he had to do, pushing a gun toward him. In that moment, after the deaths of both Mika and Lizzie, Tyreese understood why Carol killed his girlfriend. read more

Carol Peletier is a main character and a survivor of the outbreak in AMC's The Walking Dead. During the initial outbreak, she evacuates with her abusive husband, Ed, and her daughter, Sophia, to Atlanta. read more

PHOTOS: Inside 'The Walking Dead's' Spooky Season 4 Premiere The heartbreaking episode delivered yet another blow to Carol, who after losing her daughter, Sophia, was later banished from the group after Rick learned that she was the one who killed Karen and David. read more

Carol states it in the episode. "She can't be around people". They haven't met Denise at Alexandria yet so as far as they know there are no psychologists to help her. read more