You'll Find Out (1940)
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.
- Country : United States of America
- Genre : Comedy, Horror, Romance, Music, Mystery
- Studio : RKO Radio Pictures
- Director : David Butler
- Cast : Kay Kyser, Peter Lorre, Boris Karloff, Bela Lugosi, Helen Parrish, Dennis O'Keefe