The Lady Vanishes, 1938
Unfortunately, I have lost my notes on this one.
A charming older lady, Miss Froy, befriends a younger woman Iris. Then Miss Froy vanishes while on the moving train. Iris tries to find her but her investigations are impeded by the lack of any witnesses to Miss Froy’s existence. Iris is suspected of imagining her presence. Of course, there is much, much more going on than Iris suspects.
As I recall it was uneven in tone. You’d have sentimental musical interludes, slapstick comedy, thriller tension, puzzle solving, satire, action sequences. Each scene seemed spliced in from a different movie.
It’s not bad, just not exceptional in any way. I probably wouldn’t watch it again.