![](https://www.themoviedb.org/t/p/w1920_and_h800_multi_faces//rb4qc5hxc102bZKR6w0onKlYaqP.jpg)
![](https://image.tmdb.org/t/p/w600_and_h900_bestv2/mo1iZWEMtGR1iH4Yo6yNOnpM1b7.jpg)
You'll Find Out (1940)
- NR
- 11/22/1940 (US)
- Comedy, Horror, Romance
- 1h 37m
A Cold-Shiver MYSTERY With Hot-Rhythm MUSIC!
Overview
The manager of Kay Kyser’s band books them for a birthday party bash for an heiress at a spooky mansion, where sinister forces try to kill her.
James V. Kern
Story, ScreenplayDavid Butler
Director, StoryCast
![Kay Kyser's headshot](https://image.tmdb.org/t/p/w600_and_h900_bestv2/aF5ByBNRREcTWirhpIoKKBuDYhp.jpg)
Kay Kyser
Himself![Peter Lorre's headshot](https://image.tmdb.org/t/p/w600_and_h900_bestv2/hgum7XGkYgiJ8jkFr4MC03PCnD4.jpg)
Peter Lorre
Professor Karl Fenninger![Boris Karloff's headshot](https://image.tmdb.org/t/p/w600_and_h900_bestv2/fVi0QkiziavXB8HnWk5NzRcnCO1.jpg)
Boris Karloff
Judge Spencer Mainwaring![Bela Lugosi's headshot](https://image.tmdb.org/t/p/w600_and_h900_bestv2/fwimu7WKcaJXIjaDwYQg42GxUxa.jpg)
Bela Lugosi
Prince Saliano![Helen Parrish's headshot](https://image.tmdb.org/t/p/w600_and_h900_bestv2/8K1mhvRuSjSszx0R5pOwXvXgioG.jpg)
Helen Parrish
Janis Bellacrest![Dennis O'Keefe's headshot](https://image.tmdb.org/t/p/w600_and_h900_bestv2/xwdMxksOymeFYYi9oWtn7aocFKP.jpg)
Dennis O'Keefe
Chuck Deems![Alma Kruger's headshot](https://image.tmdb.org/t/p/w600_and_h900_bestv2/vaFAhU7IigdzfcFPBaqbNi0xQEr.jpg)