You'll Find Out › Cast
Kay Kyser
Kay
Peter Lorre
Professor Karl Fenninger
Boris Karloff
Judge Spencer Mainwaring
Bela Lugosi
Prince Saliano
Helen Parrish
Janis Bellacrest
Alma Kruger
Aunt Margo Bellacrest
Dennis O'Keefe
Chuck Deems
Joseph Eggenton
Jurgen
Kay Kyser Band
Kay Kyser's Band
Ginny Simms
Harry Babbitt
Ish Kabibble
Sully Mason
Mary Bovard
Mary