The clash with Mister Mind has reached crunch point. His blackmail plan having turned out to be unsuccessful, the powerful telepath seeks revenge by trying to trigger off World War III. But Martin Mystère thwarts this plan as well, and then sets off for Spain. So we find him in the story The Witches Sabbath , where he is called to Andalusia by the financers of a nuclear base: some very weird accidents keep on happening at the construction site, as if someone had put a curse on it...
In this issue: page 3 to 66, Telepatia by Castelli and Casertano. From page 67, Il sabba delle streghe by Castelli (from an idea by Sauro Pennacchioli) and Villa.