 The story concerns a travelling circus, the vampiric artists of which prey on the children of a 19th-century Serbian village.It was filmed at Pinewood Studios.One evening near the small Serbian village of Stetl, early in the nineteenth century, schoolmaster Albert Müller witnesses his wife Anna taking a little girl, Jenny Schilt, into the castle of Count Mitterhaus, a reclusive nobleman rumored to be a vampire responsible for the disappearances of other children.