Katherine and Sheila Lyon--ages 10 and 12 respectively--vanished from a Maryland mall on March 25, 1975. For decades, detectives work to uncover what happened to them. Almost 40 years after the disappearance, a sworn statement from a witness to the kidnapping is uncovered for the first time--and the witness is still alive. The man is a criminal and liar, but, somehow, through his lies the authorities are able to uncover the truth about who abducted and killed the Lyon sisters.

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