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The Walking Dead is a post-apocalyptic horror television series in which Sarah Wayne Callies portrays Lori Grimes, the wife of protagonist Rick Grimes. The show follows a group of survivors as they navigate a world overrun by zombies and struggle to maintain their humanity amidst the chaos. Lori's character arc explores themes of motherhood, survival, and the complexities of human relationships in a world where societal norms have crumbled.