Full biography of the legendary band Black Sabbath from world famous music critic Mick Wall. How Ozzy Osbourne "came off" in prison. What the tattoos of the group members mean and in what conditions they were made. All the secrets to Tony Iommi's genius. Who is in charge of one of the craziest bands of all time. All about Ozzy Osbourne's creepy gastronomic preferences. All the way the group from "garage students" to the status of great rock musicians. Insider information about commercial tricks and secrets of the group management.