An executive falls in love with and marries his secretary. However, he soon begins to suspect that she may be a demon who is after possession of his soul.

Dillman plays an archeology professor who wants to divorce his wife Mills. The grounds include incomparability-as well they should since Juliet sometimes behaves like a woman possessed. It transpires that she is in fact under the influence of a centuries-old demon, who has an aversion to be denied anything.—Ørnås