Investigators refer to 911 call recordings as a "Christmas tree" because of the many clues it gives them. Nancy Grace unwraps gifts delivered in the call Emily Glass made to report her stepson Lucas Hernandez was missing from their Wichita home in February and the call Jonathan Hernandez made after he found Glass shot to dead in the same house. Helping with the unwrapping are language expert Susan Constantine, Atlanta juvenile judge Ashley Willcott, and private investigator Vincent Hill. reporter Leigh Egan updates the condition of Jonathan Hernandez who fell critically ill after his son's memorial service. "Final Girls" author Riley Sager visits to talk about his newest novel "The Last Time I Lied."

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