You'll Find Out

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.

• David ButlerDirector
• James V. KernScreenplay

• Kay KyserHimself
• Peter LorreProfessor Karl Fenninger
• Boris KarloffJudge Spencer Mainwaring
• Bela LugosiPrince Saliano
• Helen ParrishJanis Bellacrest
• Dennis O'KeefeChuck Deems
• Alma KrugerAunt Margo Bellacrest
• Joseph EggentonJurgen
• Ginny SimmsHerself
• Harry BabbittHimself
• M.A. BogueIsh Kabibble
• Sully MasonHimself