"There's still no sign of Andrea (Laurie Holden), who got separated from the group at the end of season two. When the group discovers an abandoned prison, they think they've found a place where they can hunker down and breath easier - at least for a few days. The prison is crawling with walkers, forcing them to go on a ruthless killing mission to secure the perimeter. And you know what that means - a series of zombie kills fashioned with the kind of special effects George A. Romero could only dream of back in 1968. The monotonous killings may...