I'm not sure if this is the film that officially caused RKO to rein in their errant art-horror guru--and stick him with Boris Karloff to make sure they got actual horror, just like Universal--but, more than most Lewton films that started out as a completely different story, this one's probably his most muddled. The story feels like it spends so much time trying to be an "allegory" for something, it's hard to nail down what it actually is.
Supposedly, we follow virginal girls'-school student Kim Hunter, as she has to go to New York to track down her missing sister who disappeared into the Greenwich Village life, and later discovers her sister has been marked for death by a sinister occult organization among the city elite, and you can never tell who might be In On It--Call it "Rosemary's Sister". There's an intriguing beginning with a private detective, two helpful male romantic-leads, and the usual Cat People-esque Val Lewton nervous street chases, but once we meet the sister, the story keeps trying to lecture us on something else.
We learn that the sister was starting to feel unfulfilled and suicidal, but once the Sinister Organization catches up with her, to "sacrifice" her into silence, their method is to sit her at a table and browbeat her into trying to drink a glass of poison--after all, she wanted to kill herself, didn't she?--like Eyes Wide Shut re-enacting the Death of Socrates. And although we're told who the Sinister Occult Organization is, we never actually see them doing anything sinister or occult: With a few rewrites, the baddies could just as easily have been secret Nazi saboteurs, and, in DeWitt Bodeen's earlier murder-mystery draft of the story, probably were.
The movie ends with our two heroes catching up with the baddies and self-righteously lecturing them, for reasons that seem to go a lot deeper than just being Sinister or Occult.
Unlike the usual tight Lewton button-pushing (there's a neat chill that foreshadows Hitchcock's shower scene, seventeen years early), there's so much Message, Metaphor and Allegory muddling the thriller, it feels like a screenwriter wanted to get something off his chest. It's the kind of story that a screenwriter would write after going through his own personal issues, and forget to not make them so personal for the studio. I give it 6/10 for being so ponderous, as many films from 1943 were.
