Over the course of one ghastly week in September 1982, the bodies of four taxi drivers were found in Buenos Aires, each murder carried out with the same cold precision. More than thirty years later, Argentine author Carlos Busqued began visiting Ricardo Melogno, the serial killer, in prison. Their conversations return to the nebulous era of the crimes and a story full of missing pieces. The result is a book at once hypnotic and unnerving, constructed from forensic documents, newspaper clippings, and interviews with Melogno himself. As these conversations progress, the focus slowly shifts from the crimes themselves, to Melogno’s mistreatment and misdiagnosis while in prison, to his current fate.