so that this story is not forgotten. >> florence police inspector michele giuttari was writing his ownoks on the monster case are big sellers in italy. and giuttari thought he had compelling evidence that a satanic cult was behind the monster killings like that oddly shaped stone found at one of the murder scenes. >> translator: a uniquely shaped rock was found, in the form of a truncated pyramid, to which the experts on satanism granted importance. >> florence was intrigued. mario spezi was amused. >> i called some friends of mine, and in an afternoon i found seven. >> seven of these. >> yes, it's a common object. >> and what was this strangely carved stone? >> an antique tuscan doorstop. you can find them in antique stores all over tuscany. >> the foundation of the satanic cult theory was a doorstop. spezi soon published his findings in the newspaper. >> and he ridiculed giuttari. ridiculed him. >> it was a classic spat between two writers, except that one of the writers was also a cop. >> the police arrived at spezi's apartment 6:00 in the morning, turned the place upside down. then