I liked the initial premise to this film which is what led me to hunt it out but the problem I quickly found is that one pretty much knows what's going to happen within the first 20-30 minutes ( the doubles will come from behind the mirror and take over everybody).There is no real twist (which is fine) , but the final reveal doesn't make a great deal of sense either (how can she be racked with uncertainty and fear for the whole film, if she's an evil id from beyond the mirror?).Admittedly the scenes 'beyond the mirror' were chilling when they first appeared and the blonde's murder is also effectively creepy, but ultimately alas this seems to be a film in search of a story or a more engaging script, piling atmosphere upon atmosphere and over the top scary sound design for 80-90 minutes does not really cut it, in fact it gets quite dull.