When the Dead Come Knocking

It was directed by Dan Sackheim and written by Frank Renzulli, and originally aired on AMC in the United States on November 25, 2012.

As they debate, they notice the walkers starting to turn toward Michonne, and due to being shot in the leg earlier by Merle, she stumbles as she tries to defend herself.

She explains she had overheard Maggie and Glenn before they were taken to Woodbury by the man who shot her, though she does not reveal either Merle or Andrea's names while describing the town.

As they arm themselves from the prison's supply and prepare to leave, Rick thanks Daryl for taking charge of the group while he struggled with the loss of his wife Lori, and agrees with Carl's name for the newborn, Judith, borrowed from one of his teachers.

Merle first threatens to harm Maggie to coerce him to talk, and then turns to violence by beating Glenn up in retaliation for headbutting him in his broken nose.

Elsewhere in Woodbury, Andrea continues her affair with the Governor, and to avoid informing her of Maggie and Glenn's capture, he assigns her to help with Milton's research into walkers.

Milton is observing a volunteer, Michael Coleman (Peter Kulas), who is slowly dying from cancer, to learn about how much memory retention walkers keep.

[1] Eric Goldman at IGN gave the episode an 8.9 out of 10, praising the director's lack of music for scenes depicting Michonne and Carl's character development.