watch this french horror film last night and pretty much like it . the whole movie take place in a prison cell with basically three prisoner who find a hand write journal in a wall from a serial killer that have escape the prison 20 year earlier and somehow without leave his cell . a they look through the diary and they discover it delve into the black art and command that might be their way out of the cell and to freedom . what they find out and be something completely different and and horrify to say the least . i like low budget horror film and that deliver the good in a fairly quality way and and tell a good story . this movie do just that and despite take a while to get go . the result and the horror they unleash be very interesting to me and and i enjoy the ride . not a lot of gore and but that wouldn not fit the story and although the gore it have be pretty good .