Nemesis is the riveting account of Antonio Francisco Bonfim Lopes' ruthless ascent in Rio's terrifying underworld, his sway over its anarchic outlaw culture, and his accidental fall. Known as "Nem," he tried to bring welfare and justice to a playground of gang culture and destitution, but he quickly found himself embroiled in a world of gold hunters and evangelical pastors, bent police officers and rich-kid addicts, quixotic politicians and drug lords with math degrees.