Christopher Whitcomb, a retired FBI agent and author, joins NewsNation to discuss his new book, “Broken Plea: The Explosive Search for Truth Behind the Idaho Murders,” which reexamines the investigation into the killings of four University of Idaho students, for which Bryan Kohberger was sentenced.

Anchor Elizabeth Vargas delivers the biggest stories, without bias or opinion. Watch "Elizabeth Vargas Reports" every weeknight at 7p/6C on NewsNation. #VargasReports

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