In between fronting rock’s most iconoclastic group, the Sex Pistols, and reemerging in the twenty-first century as a reality TV hero on I’m A Celebrity , Lydon led Public Image Ltd., who merged disco, funk, and industrial punk to create coruscating soundscapes with catchy tunes-from “Death Disco” and “Flowers of Romance” to “Rise” and “This Is Not A Love Song”-and caused riots at their gigs. This is Public Image Ltd.’s terrifying story.