Cell Block D

In Dark Falls, Massachusetts, the lights flicker as a clock chimes above the officer station at Ithaca Penitentiary.

As the officers on duty pause-each with the uncanny feeling that something is wrong-only one prisoner is aware that a tear between the dimensions has just occurred, unlocking a doorway to Hell.

Unbeknownst to those inside, an evil has just been set free, and they are about to become its victims.

After two prisoners paint the walls with their entire blood supply and vanish from a locked cell, the true terror begins.

As a demon roams the prison, others are murdered and even more mysteriously disappear; it soon becomes evident that the ghosts of the victims have also returned.

Spirits roam the dim corridors of Ithaca to vent their wrath, and a night shift officer suddenly discovers he has the ability to see the apparitions.

Unfortunately, demons are not his specialty. Everyone knows blood opened the door to Hell, but no one knows what it will take to close it again.

As evil threatens to destroy the penitentiary, both the guilty and the innocent must determine what it will take to banish the terror-before it is too late.