A homicide detective realizes that the brutal murders committed by a mysterious serial killer he’s after have something to do with the late husband of a beautiful widow.

An American newcomer to a prestigious German ballet academy comes to realize that the school is a front for something sinister amid a series of grisly murders.

The setting is a Central European kingdom, near the turn of the century. Bored by his very proper wife, the youthful heir to the throne spends his time in amorous…