Killer Within

"Killer Within"
The Walking Dead episode
Carl prepares to put down his mother before reanimation after giving birth.
Episode no.	Season 3 Episode 4
Directed by	Guy Ferland
Written by	Sang Kyu Kim
Original air date	November 4, 2012 (2012-11-04)
Guest appearance(s)
IronE Singleton as Theodore "T-Dog" Douglas Emily Kinney as Beth Greene Lew Temple as Axel Markice Moore as Andrew Vincent M. Ward as Oscar
Episode chronology
← Previous "Walk with Me" Next → "Say the Word"
The Walking Dead (season 3) List of The Walking Dead episodes

"Killer Within" is the fourth episode of the third season and 23rd episode overall of the post-apocalyptic horror television series The Walking Dead. It originally aired on AMC in the United States on November 4, 2012, and was written by Sang Kyu Kim and directed by Guy Ferland. The episode marked Sarah Wayne Callies and IronE Singleton's final appearances as Lori Grimes and Theodore "T-Dog" Douglas and as regular actors on the show. Most television critics positively reviewed the episode, applauding its bleak undertones and the performances. However, some commentators criticized the narrative ploys and the direction taken in the program. "Killer Within" was viewed by 9.27 million viewers, including 4.9 percent of those in the 18 to 49 demographic upon its initial broadcast in the United States.

An unidentified individual leaves the remnants of a donkey carcass as a trail to lead the walkers to the prison where Rick's group has made their shelter, and breaks the lock to open the prison gate to allow the walkers inside.

In Woodbury, Michonne (Danai Gurira) discovers bullet holes in the vehicles that the Governor (David Morrissey) recovered from the National Guard camp after claiming the camp was overrun. She approaches him to learn more what happened, but he refuses to reply, and instead tries to convince her to stay in Woodbury. Michonne reiterates her concerns to Andrea (Laurie Holden) and her desire to migrate to the coast. Andrea instead desires to stay in Woodbury, and offers Merle (Michael Rooker) the location of the Greene farmstead to look for his brother Daryl. The Governor initially denies Merle's request to look for Daryl, but agrees to let him go on the basis that he will learn more information about Rick's group. Andrea begins to become romantically involved with the Governor.