If your idea of a cracking night in is a film in which some bloke with a nasty case of eczema saws his own balls off, knock yourself out... purchase 'Penance'.
If your idea of cinematic heaven is a film in which touted "star" Jason Connery doesn't turn up until half way through the end credits in a scene that's completely unnecessary (no, seriously)... by all means, this is the film for you.
If you're the kind of person who masks their burning, near-homicidal hatred of women beneath a veneer of enjoying "extreme" films, congratulations... You've found your 'Citizen Kane'.
If, however, you value things like plot, script, acting, and genuine scares in your horror films, you'll be sorely disappointed. 'Penance' is a terrible film. It's the dreary end result of a cultural cul-de-sac that started with David Fincher's excellent 'Seven', and continued through tired ripoffs like 'Saw' and the odd highlights like Eli Roth's 'Hostel'. Let me get one thing straight... Not all of the so-called "gorno" or "extreme" horror films are bad. The French film 'Martyrs' is a very tough watch, but is thought-provoking and excellently made. Some of the 'Saw' films were actually quite fun in the cinema, in a silly, gory kind of way.
'Penance' tries to riff off its predecessors, but unfortunately appears to have been made by a monkey. A retarded, woman-hating monkey. With a fetish for genital mutilation.
Incredibly, this film allegedly cost as much ($1.5million) as the flawed but thoroughly enjoyable 'Insidious'. Now, while 'Insidious' was a 15 certificate in the UK, and a PG13 in the US, it's far more disturbing and genuinely scary than this exploitative pile of tosh.
One to avoid, even if you're into this kind of thing.