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.

CAST

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

Mary BovardMary (uncredited)

Jeff CoreyMr. Corey (uncredited)

Louise CurrieMarion (uncredited)