Flowers had just turned 22 when The Killers blew up in 2003 with their single “Mr. Brightside.” When they first tasted fame, Flowers says he gave in to some of the trappings that come with it, smoking and drinking regularly—and sometimes to excess. “It’s so attractive when you’re young,” he says. “You hear the stories and all the rock ’n’ roll mythology, so it’s all there in the palms of your hands. It’s enticing. I never went to rehab or anything, but I drank and smoked.”