Prison horror isn't the most original concept, but this film really takes the idea to the limit, limiting it's scope to two prison cells and the two prisoners occupying them for 3/4 of its running time.
Just on the eve of execution of Texas' most notorious mass murderer, "Barry the Butcher", Miles starts his 18-months sentence for drug possession. After midnight - with Barry's execution - mysterious and presumably gruesome things start to happen in the prison, with Miles and…