What Happens in Killers Within?
The complete story of Killers Within, from the first scene to the last, in 430 words (about 2 minutes). Spoilers throughout.
Spoilers ahead
Outside the prison an unidentified individual lures a group of walkers towards the prison, breaking open the front gate’s lock to allow them inside.
Michonne is suspicious of how the Governor recovered supplies from a nearby National Guard camp, but he refuses to discuss it. She expresses her concerns with Andrea, and believes they should leave and head for the coast. Andrea would rather stay, and provides information on the Greene farmstead to allow Merle to look for his brother Daryl. The Governor tells Merle he will allow the search once Merle obtains more concrete information. Andrea begins to become romantically involved with the Governor.
Rick Grimes discusses with the others about making the prison their permanent home. The two remaining prisoners Axel and Oscar request to join the group, but Rick, still distrustful, informs them of his intent to send them away at the end of the week.
The group gathers as Hershel Greene takes his first steps after the amputation of his right leg. Suddenly, walkers swarm the courtyard, scattering the group. T-Dog, having been bitten on the right shoulder while shutting the gate, races after Carol and sacrifices himself by barreling into a walker horde to let her escape. Rick, Glenn, and Daryl find the gate’s lock broken and resecure it to prevent further walkers from entering. Rick accuses Axel and Oscar of the treachery, but an alarm begins sounding due to activation of a backup generator, potentially drawing more walkers. Rick realizes the prisoners cannot be at fault and lets them lead him to the generator room. There, they find Andrew, whom Rick had left for dead, as the instigator. Andrew is about to kill Rick when Oscar shoots him using Rick’s revolver, and then turns the gun over to him. They stop the generator and disable the alarm.
Elsewhere, Carl covers for his mother Lori and Maggie as they take shelter in a boiler room. Lori has gone into labor, but is bleeding profusely during her contractions, thus unable to give birth properly in the boiler room. Lori demands Maggie perform a lethal Caesarean section to deliver the child, knowing it will kill her, but would rather die knowing her baby will live. The baby is delivered safely, but Lori dies; Carl takes a moment to mourn before shooting her in the head to prevent reanimation.
With the walkers dealt with, the group rejoins in the courtyard, though Carol is still missing. Rick sees Carl and Maggie emerging from a cell block with the baby, but realizes Lori is not with them and becomes hysterical.
