"The Grove" is the fourteenth episode of the fourth season of the post-apocalyptic horror television series The Walking Dead, which aired on AMC on March 16, 2014. The episode was written by Scott M. Gimple and directed by Michael E. Satrazemis. Carol, Tyreese, Lizzie, Mika, and Judith come across a house in a pecan grove on their trek to Terminus and deal with the moralistic concepts of the world of walkers, an unstable Lizzie, and the admission by Carol of killing Karen to Tyreese. This is the final episode to feature two semi-regular cast members, with their deaths being received positively by most critics. Upon airing, the episode was watched by 12.87 million American viewers and received an 18–49 rating of 6.4. This marks an increase in viewership and 18–49 ratings from the previous episode. Plot Tyreese, Carol, and sisters Lizzie and Mika continue their journey to Terminus along the railroad tracks, while caring for Rick's young daughter Judith. Carol and Tyreese are concerned for the survival of the sisters, as Mika is too gentle and Lizzie appears to not understand what walkers are. They spot a walker get trapped by his legs on the train tracks, and Lizzie pleads with Tyreese to spare it, as it no longer represents a threat. Nearby, they find an abandoned home in a pecan grove, Carol suggesting they may want to rest there a few days. While Tyreese and Carol clear the house of walkers, a walker approaches the sisters; Mika is quick to shoot it in the head, while Lizzie looks on in tears. They secure the perimeter of the house and settle in. The following day, Carol sees Lizzie attempting to play tag with a walker, and she runs out and kills it. Lizzie becomes upset and yells at Carol for having killed her "friend". Later, Carol takes Mika to hunt in the forest, but Mika finds she cannot bring herself to shoot a deer. When they return, they find Tyreese has managed to get the water pump working, and he suggests they may want to settle here permanently. Later that day, Lizzie and Mika go back to the train tracks, and Lizzie feeds the trapped walker a mouse; she moves in closer, preparing to let the walker bite her, telling Mika that the walkers "want me to change", but a group of walkers suddenly appear and the two flee back