Phenomena

After missing a bus in the Swiss countryside, a 14-year-old Danish tourist, Vera Brandt, tries looking for help. She comes across a cottage and is attacked and beheaded by a stranger. Eight months later, her case is being inspected by forensic entomologist John McGregor and police Inspector Rudolf Geiger, who note that Brandt is but the first of a series of murders against young girls, including McGregor's former assistant.