Andrew Lincoln told Yahoo that one episode in the second half of season 4 would be "the most controversial episode you've ever been involved in." "The Walking Dead" season 4, episode 14, "The Grove" is that most controversial episode and Robert Kirkman comic book writer confirmed this fact. "That would definitely be this episode," says Robert Kirkman to Entertainment Weekly.

Major Spoilers for "The Walking Dead" Season 4, Episode 14, "The Grove"

The previews for this episode clearly suggest that the installment focuses on Tyreese (Chad Coleman), Carol (Melissa McBride), Mika (Kyle Kenedy), Lizzie (Brighton Sharbino) and baby Judith. This mini group was last seen in "Inmates."

According to Pop Dust, "The Walking Dead" season 4, episode 14, "The Grove" begins with a scene in which Lizzie is playing tag with a walker.

It is a night scene. Tyreese and Mika are asleep. Carol and Lizzie keep a watch. Tyreese starts to have a terrible nightmare.

Carol and Lizzie talk about Sophia. Carol tells her about Sophia' death and what the girls should to protect themselves and save others.

The morning scene.

In the morning, the group starts to take the tracks again and move towards the Terminus.

Carol and Tyreese talk about the girls and she tells him that Lizzie does not understand walkers.

Carol and Mika head for a supply run while Tyreese, Lizzie and baby Judith wait on the tracks. As they are waiting, a walker comes down the tracks and Tyreese locates it. The walker stumbles on the tracks and loses its legs. Tyreese decides to get rid of it, but Lizzie begs him not to kill it.

Carol and Mika talk.

During the supply run, Carol and Mika continue to talk about Sophia. Carol tells her that in the post-apocalyptic world, she must never let her guards down. Walkers aren't the only threat as people can also be dangerous. Carol tells her that she might have to kill somebody for the right reasons. Mika says that she would never kill someone and would rather run away.

The Group Finds a new House.

Carol, Mika, Tyreese, Lizzie and baby Judith reunite and continue their journey. Later, they see a beautiful house in a grove. The house is surrounded by trees with fruit and nut. They decide to live there. Lizzie and Mika watch over Judith outside while Carol and Tyreese look inside the house for any threats.

A walker approaches towards the girls and Mika shoots it. Carol and Tyreese come out to find Lizzie all hysterical. Later, Tyreese says that they should make the house their new shelter and forget about going to the Terminus.

Lizzie Plays with a Walker and Wants to Become One.

Later, Lizzie is seen playing with a walker. Carol is inside boiling water and looking at Lizzie. She runs out to put down the walker, and this makes Lizzie go hysterical, again. She thinks that killing walker is like killing a human being.

Now, Lizzie is on the tracks and playing with a legless walker. Mika sees her. Lizzie is making the walker eat a rat. She tells Mika that she wants to be like the walker. Walkers approach the girls and they run from the scene.

Meanwhile, Carol and Tyreese talk. He mentions that he has been having nightmares about Karen. When they return to the house, they see Lizzie holding a knife. It is covered with blood.

Lizzie Kills Someone.

Lizzie is shown with a knife. She kills a human being. Has she killed Mika or baby Judith?

The Mystery of Dead Rats.

Tyreese finds a box of dead rats. Is it Lizzie's?

Carol might confess to Tyreese that she killed Karen and David.

Watch "The Walking Dead" season 4, episode 14, "The Grove" on Sunday, March 16, 2014 on AMC at 9 p.m. ET.