In creating a believable post-apocalyptic world, attention to detail is crucial. "The Walking Dead" creators paid close attention to the time of day, with broken clocks and watches featured in many episodes. A silver pocket watch given to Glenn by Hershel signifies the welcome of Maggie's new partner and has been seen in multiple episodes. The time on the watch is always set to match the episode number, including when Carol picks up Rick's watch off the table. This attention to detail adds to the authenticity of the show's portrayal of a zombie-infested world.