You'll Find Out - Cast

Kay Kyser

Himself
Actor

Peter Lorre

Professor Karl Fenninger
Actor

Boris Karloff

Judge Spencer Mainwaring
Actor

Bela Lugosi

Prince Saliano
Actor

Helen Parrish

Janis Bellacrest
Actor

Dennis O'Keefe

Chuck Deems
Actor

Alma Kruger

Aunt Margo Bellacrest
Actor

Ginny Simms

Herself
Actor

Harry Babbitt

Himself
Actor

M.A. Bogue

Ish Kabibble
Actor

Sully Mason

Himself
Actor

Mary Bovard

Mary (uncredited)
Actor

Jeff Corey

Mr. Corey (uncredited)
Actor

Louise Currie

Marion (uncredited)
Actor

Bess Flowers

Lady In Taxi (uncredited)
Actor

Eleanor Lawson

Ms. Gaby Lawson (uncredited)
Actor

Frank Mills

Cabbie (uncredited)
Actor

Dorothy Moore

Penny (uncredited)
Actor

Leonard Mudie

Real Karl Fenninger (uncredited)
Actor

Frank O'Connor

Apartment Responder (uncredited)
Actor