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When the mutilated body of Mayra Cabral de Melo, a well-known stripper, is found by the side of a dusty road, detective Edgar "Lefty" Mendieta has personal reasons for bringing the culprit to justice. Mayra had no shortage of ardent, deluded, and downright dangerous admirers, and Lefty himself is haunted by one steamy night he spent in her generous company. So begins an investigation that will bring him ever closer to the murderous world of the narcos, who are waging a war of bloody attrition against the Mexican state. The country is a powder keg, waiting for a spark, and Mendieta is about to enter the darkest days of his life. Corrupt politicians, failed boxers, and unscrupulous arms dealers all lie in wait along the path to justice. But none of this can prepare him for his run-in with the FBI, when the father of the president of the United States is attacked while on vacation in Mexico. For all these perils it is the weight of his own murky past that Lefty finds hardest to bear. And as he scratches around for clues, faced with a gallery of suspects who all have a motive and none of whom is a stranger to the dark arts of murder, the reappearance of Samantha Vald_s, now the boss of the Cartel del Pac_fico, adds one more jagged piece to an already unsolvable puzzle.