When a sketch of a suspect is released, conspiracy theories spread. The families, looking for an arrest, take their case to the national media. As the investigation goes quiet, the noise of speculation grows louder.

Abby and Libby - 2 young girls murdered. Investigators are searching for the killer using their biggest clue: a recording of his voice from one of the victims' phones ordering the girls Down the Hill. Almost three years later, it's a mystery that still haunts the small town of Delphi, Indiana while police say the killer may walk among them.

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