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 and his orchestra are hired to entertain at the birthday party of a young heiress at a creepy old mansion, where they uncover a plot against her life. Who is the villain? The sinister judge? The phony medium? The skeptical psychologist? You'll find out.—Anonymous