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.
Kay Kyser
as Himself
Peter Lorre
as Professor Karl Fenninger
Boris Karloff
as Judge Spencer Mainwaring
Bela Lugosi
as Prince Saliano
Helen Parrish
as Janis Bellacrest
Dennis O'Keefe
as Chuck Deems
Alma Kruger
as Aunt Margo Bellacrest
Joseph Eggenton
as Jurgen
Ginny Simms
as Herself
Harry Babbitt
as Himself
M.A. Bogue
as Ish Kabibble
Sully Mason
as Himself
