the title doesn not make much sense to me . i be not sure what door in the movie shouldn not have be open . the movie start uneventfully and with a conversation between a man and a woman in a room that look like a richly furnish train car and complete with the sound of the train travel . in fact and the man house be a train car and and he have a cassette of train sound . the woman leave and and call a young woman . the young woman tell her boyfriend and a doctor and that she be tell her grandmother be ill and and she need to return to her home town . she hasn not be there in thirteen year . flash back to thirteen year ago . a shadowy figure enter a house . he caress a sleeping young girl and then go into another room and stab the girl mother . the girl wake up and enters her mother room and find her dead with a knife in her . she scream and and an arm come out of nowhere and clap a hand over her mouth . she look up in fear . that early scene in the movie of the killer muffle her scream and and the girl look be one of the few effective shot in the movie . it doesn not have much go for it in the visuals department . occasionally there some strange use of sound and and there some weird light in an attic scene where many of the pane of glass be red and blue . back to the present day . the young woman arrive in her grandmother house . an old doctor be there and who she doesn not trust and along with the man from the opening scene judge and kearn and the town museum operator . she doesn not trust any of them and and it true they do not inspire any trust . she rather crabby throughout the whole movie . she want to check her grandmother into a hospital . the men in the town want her house and and the museum operator want the thing in it ( his museum be already fill with many of the grandmother thing ) . inexplicably and the woman want to keep the house . the young woman start get phone call from a man speaking in a sinister whisper . he make various threat and and want her to do thing to arouse him . such scene recur often . unfortunately and there be so few character in the movie and that the possibility of who it could be be limit . bad still and we see right from the beginning who be make the phone call . so and while the young woman doesn not know ( even though the caller occasionally drop into his normal voice ) and the audience always know represent no suspense . each call rattle her more and more . the end be unexpected for me and so maybe get point for not go with the obvious and but i be not sure i care for it .