In a small British village, tranquility is shattered when a series of mysterious murders begins to instill panic among the locals. The bodies of the victims are found drained of blood and bearing strange marks on their necks, leading the police to believe they are dealing with a brutal serial killer. However, the truth is far darker and more disturbing.
A young investigator, intrigued by the events, joins forces with an enigmatic creature hunter who has been tracking the trail of a strange beast that, according to legends, takes on the form of a human being. In their quest, they discover that the key to solving the mystery lies in an ancient legend about a strange being with the ability to transform into a bloodthirsty creature. As paranoia grows in the village, the investigator and the hunter face not only the threat of the beast but also their own madness and the fear that darkness can evoke in the human heart.
With a touch of gothic horror and an air of suspense, this 1960s thriller mixes elements of science fiction and terror in a fascinating way, challenging the characters to unravel what is real and what is merely a manifestation of their deepest fears. In the end, the divide between the human and the monstrous becomes increasingly blurred.