Classic horror film fans will salivate at the thought of seeing Bela Lugosi, Boris Karloff, and Peter Lorre all at their devilish best in any film even if it's not a horror film per se. But the star of this film was noted band-leader and radio personality Kay Kyser who back in 1940 was enormously popular for his music and his Spike Jones lite type of orchestra comedy.
You'll Find Out features Kay and the boys hired to play at a party that their manager Dennis O'Keefe has arranged for his girlfriend Helen Parrish. She's an heiress whose money is held in trust by her aunt Alma Kruger. But Kruger is in the thrall of fake swami Bela Lugosi who's got a séance also planned for the evening. Also in attendance in addition to Parrish's girlfriends are Boris Karloff as the family attorney and Peter Lorre as a psychologist hired to expose Lugosi as a fake.
If you liked as I do Abbott&Costello Meet Frankenstein than you should like this film as well. In fact Bud and Lou also did Hold That Ghost which is even more similar to this film. But it's a double treat if you like the music of the era as I did.
Kay Kyser's orchestra also featured singers Harry Babbitt and Ginny Simms who introduce I'd Know You Anywhere which gained for You'll Find Out an Oscar nomination. Kyser himself was good as both comedian and musician.
Even though it's a comedy and not a Gothic horror film one should never pass up seeing Karloff, Lugosi, and Lorre in the same film.