Dead Men Walking (2005)

A Maximum Security Prison - Thousands of Infected Inmates - Only One Way Out!

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.