Dead Men Walking

Dead Men Walking (2005) is a horror directed by Peter Mervis rated 3.8/10.

A viral outbreak turns those who are infected into the walking dead. Soon, the undead are contained, being kept in a maximum security prison. However, those who contained the undead are also trapped in this zombie-infested prison. Their only hope is to escape; but once you're inside this prison, there's really no way of getting out safely.