Eager to escape the grief and nightmares of the city, Louis Olsen travels to Southwest Minnesota, seeking the peace of the rural countryside. When he accidentally disturbs the grave of a supposed local 'witch' Mary Jane Terlinden, what began as a peaceful reprieve unravels into a haunting nightmare from which Louis cannot escape - but is it all just in his head?
Criminal mastermind Dr. Mabuse returns from exile to begin a new reign of terror, and only young Inspector Carl Lohemann stands in his way.