Prison

Prison (1987) is a supernatural horror film from director Renny Harlin that you can watch online on iFILM. A condemned Wyoming penitentiary reopens two decades after it was shut down for cruelty. Something behind its walls wakes up too.

New warden Eaton Sharpe used to work here as a guard, and years ago he framed an innocent man, Charles Forsyth, for the electric chair. When inmates are forced to tear open the sealed execution room, Forsyth's vengeful spirit pours out across the cellblock. A very young Viggo Mortensen shows up in his first feature role.

Harlin shot this before Hollywood handed him Die Hard 2 and A Nightmare on Elm Street 4, and you can feel him learning to make cramped concrete scarier than any creature. Practical effects, real grime, no CGI safety net. Stream Prison (1987) online on iFILM.