When composer George Harvey Bone wakes with no memory of the previous night and a bloody knife in his pocket, he worries that he has committed a crime. On the advice of Dr. Middleton, Bone agrees to relax, going to a music performance by singer Netta Longdon. Riveted by Netta, Bone agrees to write songs for her rather than his own concerto. However, Bone soon grows jealous of Netta and worries about controlling himself during his spells.

Two bumbling servants are hired by a dizzy society matron to cook and serve a meal to visiting royalty.

A beautiful Austrian refugee in England--who is also a Nazi agent--marries a scholarly English pacifist. He lives near a secret military base she needs to get information about so she can help in Hitler's planned invasion of England.