Plot summary
Michonne tries to convince Andrea to leave Woodbury while Merle presses her for information on Daryl. At the prison, walkers are unleashed upon the group. T-Dog is bit and sacrifices himself so that Carol can escape, but she presumably dies too. Oscar and Axel help Rick, Daryl, and Glenn search for the others. They find Andrew, who survived and sought revenge upon them, but Oscar kills him. Meanwhile, Lori goes into labor and becomes trapped within the tombs. Maggie is forced to perform a fatal C-section to save the baby. Carl shoots Lori to prevent reanimation. As the survivors regroup, Rick is devastated.
Credits
Adapted from Wikipedia contributors, The Walking Dead season 3. HTML formatting and reference markers removed.