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U.S. authorities scrutinize a supposed miracle cure for autism that a fringe church is promoting; employees faking injuries to receive disability; an American woman convinces people she is a descendent of French nobility.
Christopher Waide is convicted of the 2014 murder of 19-year-old Lea Porter and is sentenced to 48 years in prison; the report includes never-before-seen police interrogation videos, surveillance videos and crime scene photos.
Babs Proller told ABC News' "20/20" that she hid a tape recorder during her conversations with federal prosecutors' star witness, Armando Morales.