Having seen this advertised in summer 2005, I decided to wait to rent it on DVD.
Granted, it wasn't the worst film I've ever seen however I felt that the plot was weak. The setting of a creepy old house was fantastic and having that mysterious locked door really did seem to feed on the audience's fear. The dream sequences were nicely done, as were the flashback scenes. Superb performances from Emma Catherwood.
Billie Piper was far better in Doctor Who and although there is nothing directly bad about her acting there is also nothing particularly great either. I'm no prude by all means but I thought this film would be more suited to an 18 certificate...
I would say this film is worth seeing once but not twice.