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Young inspector Amaya Salazar joins a special team of FBI agents and is given a new assignment: to hunt down a maniac who is slaughtering entire families. The killer is called the Conductor because of the strange ritual he performs over the bodies of his victims after each crime. Why did the killer's actions remind Amaya of her mother's behaviour? The inspector begins to chase the conductor. At the same time, she wants to escape from the memories of her own past and the events that changed her life forever. The woman feels that she is about to get on the conductor's trail. But a disturbing call from her aunt revives Amaya's darkest fears. And Hurricane Katrina, which hits the city, unexpectedly turns the case in a different direction...