Three girls summon a demon. John Sinclair, a British investigator for supernatural phenomena, travels to Germany to meet Kerstin who is the only girl left. But the demon wants to sacrifice her in the old cathedral of Cologne.
as John Sinclair
as Bill Conelly
as Pater Ignatius
as Kerstin Müller
as Marion Baumann
as Viktor Gonsoir
as Willi Mallmann
as Glenda Perkins
as Sybille Thelen
as Dr. Hollister
as Bernie
as Frau Kruse
as Petra Klinger
as Sir James Powell
as SEK-Mitglied
