I don't know what people are talking about when they say its an average example of the giallo, when its not at all a giallo! Just because its Italian and people die does not make it giallo. There is no black gloved killer, no red herrings, no sexually charged situations, no surprise endings and reveals as to who the killer is, or any other typical elements of the giallo. If you go into it looking for a giallo, then of course you will be disappointed. Here we know who the antagonists are and their motive is gradually revealed throughout the first half of the film. Then the next half is occupied by the increasingly desperate struggles of the captives to stay alive and to get free. Taken as a thriller, the movie succeeds. There is tension, uncertainty, intelligent victims who you can root for and who give the antagonists a good run for their money. Most of the film takes place within an apartment, which creates a suffocating feeling that allows the viewer to better enter the protagonists experience in the film. The ending was excellent. The actors did a great job for the most part but the ending was beautiful, with so much emoting done strictly through the eyes. Anyway, I was not expecting much from this film and I got a lot, so much that I will definitely preorder the blu ray. Give it a chance on its own merits and leave your giallo expectations at the door.