The reputation of explo-surrealist Jess Franco's penchant for sadism and cruelty largely rests on the four Women In Prison films he made almost back to back in the late '70s. Far from the 'intellectual' flaunting of 'Succubus' or the dream-like aura of 'Vampyros Lesbos', Franco's works like 'Ilsa: Absolute Power', 'Barbed Wire Dolls', '99 Women' and this film, reveal his fascination with unabashed sadism and humiliation without distraction.
Granted a couple of other filmmakers have far surpassed this film in terms of hyper-shocking violence (Guinea Pig anyone?), but the latent nihilism and hatred of Franco's entire oeuvre comes out in spades in 'Cell Block 9'.
Granted, it's highly inartistic, very cheap and mainly a smörgåsbord of cruel scenarios depicting a woman's political prison in the jungle and the cruel warden who rules it with an iron fist. There is a message in the sense that you can feel Franco's outrage regarding prisoners of conscience, but there's no unifying statement here, political or otherwise.
For those who like Franco's skewed view of human sexuality but can do without the heady surrealism, this is a pretty good film to watch, especially if you're curious about what happens when the Master takes his gloves off and gets dirty. Also, for you hardcore Franco fans, if you thought 99 Women and Barbed-Wire Dolls was a little 'soft', you'll be redeemed here. Recommended for Franco fans.