You'll Find Out
1940-11-22The 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.

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.

Himself
Kay Kyser

Professor Karl Fenninger
Peter Lorre

Judge Spencer Mainwaring
Boris Karloff

Prince Saliano
Bela Lugosi

Janis Bellacrest
Helen Parrish

Chuck Deems
Dennis O'Keefe

Aunt Margo Bellacrest
Alma Kruger
Jurgen
Joseph Eggenton

Herself
Ginny Simms

Himself
Harry Babbitt

Ish Kabibble
M.A. Bogue

Himself
Sully Mason

Mary (uncredited)
Mary Bovard

Mr. Corey (uncredited)
Jeff Corey

Marion (uncredited)
Louise Currie

Lady In Taxi (uncredited)
Bess Flowers
Jean (uncredited)
Jeanne Houser
Script Man (uncredited)
Richard Kipling

Ms. Gaby Lawson (uncredited)
Eleanor Lawson
Apartment Complainer (uncredited)
Larry McGrath

Cabbie (uncredited)
Frank Mills
Mimi (uncredited)
Mimi Montaye

Penny (uncredited)
Dorothy Moore

Real Karl Fenninger (uncredited)
Leonard Mudie
Servant (uncredited)
Joseph North

Apartment Responder (uncredited)
Frank O'Connor
Mother (uncredited)
Beulah Parkington
Jane (uncredited)
Jane Patten
French Maid (uncredited)
Eugenia Rafee
Mac (uncredited)
William Telaak
Joan (uncredited)
Joan Warner
Infant (uncredited)
Guy Webster
Georgia (uncredited)
Mary Martha Wood