You’ll Find Out - movie trailer

You’ll Find Out (1940), starring Kay Kyser, Boris Karloff, Bela Lugosi, Peter Lorre

Synopsis of You’ll Find Out

"In You’ll Find Out, famous band leader Kay Kyser and his group go to a scary old mansion where they encounter a ghostly seance, a murder plot, Bela Lugosi, Boris Karloff, and Peter Lorre! It’s spooky fun for all in this ultra rare classic from 1940!"

https://family-friendly-movies.com/horror-movies/youll-find-out-haunted-house-comedy/