In the Blu-Ray/DVD release, Rick's last line is "They're fucking with the wrong people". In the televised version he says "They're screwing with the wrong people". In an interview, Andrew Lincoln states they shot two different takes of him saying the lines.
This is the only episode in which we see somebody else other than Rick and Carl wear the original sheriff hat. In the scene, Rick tells Carl that he needs a farming hat, and places the sheriff hat over Beth's head; saying that there's a new sheriff in town.
The part where the gun shot goes off by Rick's (Andrew Lincoln) ear is shot in the format of the gun shot in the tank back in season 1.
Was filmed before the final attack on the prison due to flashbacks at the prison.
This episode contained a flashback to Judith Grimes when she was younger. Twins Delia Oeland & Sophia Oeland were used to portray her.