Released on May 25, 1983, the album has been hailed by critics as Dio's best work and a classic staple in the heavy metal genre. The album was certified gold in the US on September 12, 1984, and platinum on March 21, 1989. "Caught in the Middle" shares the main guitar riff with Campbell's previous band
Sweet Savage's song "Straight Through the Heart" (1983), whose title was used for another song in this album.
Album art The album art is illustrated by Randy Berrett. It features the band's mascot Murray, a demonic creature, pulling or whipping a snapped metal chain and a Catholic priest flailing and splashing around in a body of water, wrapped up and locked in the other end of the broken chain. Dio was quick to argue that appearances are misleading, that it could just as easily be a priest killing a devil, wanting people not to "judge a book by its cover". Murray is featured on several other Dio albums. ==Themes==