Irvine Welsh's controversial first novel, set on the heroin-addicted fringe of working-class youth in Edinburgh, is yet another exploration of the dark side of Scottishness. The main character, Mark Renton, is at the center of a clique of nihilistic slacker junkies with no hopes and no possibilities, and only "mind-numbing and spirit-crushing" alternatives in the straight world they despise. This particular slice of humanity has nothing left but the blackest of humor and a sharpness of wit.