I saw this film a few years ago, and couldn't believe how frightening it is. I don't think I've seen anything that has given me the creeps quite so much. I also like the Irene Handl one-liner to her policeman husband, to the effect: "You'd better take your time going round there, so you don't get hurt". But seriously, the use of flashbacks within flashbacks, and the ending, also.
Review of House of Mystery
