Although You'll Find Out stars Bela Lugosi, Boris Karloff and Peter Lorre, it is really a comedic vehicle for 1940's big band conductor and radio personality Kay Kyser. If you enter into this film in the spirit of a Scooby-Doo mystery, then it can be quite enjoyable. If you're looking for horror and things that go bump in the night, then you better look elsewhere.
The funs starts when Kyser and his band are booked to play a birthday party in an old spooky mansion out in the middle of nowhere. Along the way we encounter big musical numbers, attempted murder, fake seances and Bela Lugosi in the most ridiculous outfit I've ever seen. A Gloria Swanson turban with a matching silver lame' robe? Seriously? It looks like something out of an Ed Wood movie.
The music is great. The plot is fairly predictable. The talents of Lugosi and Karloff are wasted. However, Kyser comes out smelling like a rose which is the intent of this film as a piece of self-promotion. Good for him! This one was fun to watch and is actually a decently made film. Just remember, it's NOT a horror film.
RATING: Very Good.
For more info check out the film's entry in IMDB.