AMC's exhilarating drama, "The Walking Dead," returns for a new season. Coming off an action-packed finale, Rick Grimes (Andrew Lincoln) and his band of survivors continue to seek refuge in this desolate post-apocalyptic world, they soon discover that there are greater forces to fear than just the walking dead. In this uncertain world, Rick and the survivors must not only fight the dead, but also face a whole new fear: the living.