This is a miniature but a very efficient one. Ida Lupino is one of those actors I never found lacking but on the contrary raising every film she was in to a top level. She excelled in acting parts where she could make something great out of a small character, and this is a typical example. She gets a job as a caretaker at a large but desolate mansion of a great past but with a very dark secret developing into a looming mystery of constantly more threatening proportions, as Ida finds herself persecuted by the same kind of ghost that evidently scared away Jennifer, the previous lodger. No one knows what became of her, she just vanished without a trace, and that's the mystery, which immediately starts to haunt the vulnerable Ida, who gets more and more possessed by it. Two male characters also haunt the place and act as some kind of aids but seem both very suspicious, and she definitely cannot trust them and even less the more helpful they are. What's really happening is that everyone is keeping a secret from her, and as she can get no clue to the threat of this fact she naturally feels more and more exposed to unknown dangers, and she has a right to be. It all ends up to a shocking climax, making the structure of this film very similar to many Hitchcocks, especially "Suspicion" with Cary Grant and Joan Fontaine 10 years earlier. The interest and quality of the film lies entirely with suggestions and innuendos, shadows speak more than words, the moods take over and dominate reality, and you get involved in Ida's increasing terror of the unknown. It's a marvellous small film and the greater and more interesting for its fascinating minimalism.