The Thirteenth Guest (1932)
Chosen by me from a list of public domain films.
Ginger Rogers is fairly good in this daft but mostly fun mystery caper.
It's one of those movies with hidden passageways and overly complicated nonsensical plots (i still don't understand how the 13th guest is actually the 13th guest?).
Rather ramshackle in construction (and acting - the killer has a crazy laugh, for some reason) but still somewhat charming.