Beth Greene dies in the episode “Coda,” the eighth episode and mid-season finale of The Walking Dead's fifth season. The episode aired on November 30, 2014, and centers on the hostage exchange at Grady Memorial Hospital in Atlanta.
Beth has been held at the hospital under the control of Officer Dawn Lerner, while Rick's group tries to rescue her and Carol. The exchange initially appears successful, but Dawn suddenly demands that Noah return to the hospital. Beth reacts by stabbing Dawn in the shoulder with a pair of scissors; Dawn reflexively fires her pistol and kills Beth.
The title “Coda” is a musical term for a concluding section, and it connects to Beth's association with music and singing. The episode is often remembered alongside “Too Far Gone,” in which Hershel dies, but those are separate episodes. “Coda” also includes the emotional reaction of Maggie and Daryl, followed by Morgan Jones's post-credits discovery of Rick's trail.