This makes it onto almost everyone's top ten horror films of all time. It's certainly creepy enough in the atmosphere department, but I must confess it was hard to follow. When I read a synopsis of this film that explained it all, I thought it was pretty generous with it's interpretation. Things that didn't make sense were just given a "she imagined it" or a "it was all a dream" excuses. Having said that, there is also the language problem. While I was gaining confidence that there really was only one sister at the house, I rewinded the film to see that yes, indeed, the step-mother referred to the GIRLS coming for a visit. So there is that subtitles problem as well. This is a seriously scary movie if you don't get too attached to needing it to be clear.
Two sisters who, after spending time in a mental institution, return to the home of their father and cruel stepmother. Once there, in addition to dealing with their stepmother's obsessive and unbalanced ways, an interfering ghost also affects their recovery.