This ticks two boxes that Dad had for old movies he liked to revisit. Stories about musicians and released during WW2. Which brings me to The Uninvited (1944).
This was made during the time when psychology was becoming a trendy topic in Hollywood films. The show isn't all about psychological things but also works as a good haunted house story. Fortunately, the psychology angle isn't overdone and thus the show has aged better than other movies of the time. The plotting is a little convoluted but keeps you guessing well enough until the nature of the mystery is apparent, even if we figure it out well before the characters do.
The cast is really good. Milland can be pretty bland in some of his shows but he's better here and of course we know he had acting chops since his famous performance in "The Lost Weekend" is only a few years off. Here, he plays it charming and cool, though he comes off a bit flat on the more dramatic scenes.
Gail Russell gives a realistic, vulnerable performance which apparently was a reflection of the actor's insecurity in real life. The rest of the cast is good and Cornelia Otis Skinner doing well with a slightly off-balance take as the mental institution director who seems to have had a gay relationship with one of the "ghosts". And yeah, of course it's problematic that one of the weirder people in the movie is the lesbian. Fun! Oh, and isn't it funny how most of the people in the movie, which takes place in England, sound like Americans?
The movie is justifiably famous for introducing the jazz standard song, "Stella by Starlight".
What also makes the movie work is the very effective cinematography, much of which takes place in dark, candlelit interiors.