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Aaron Hernandez

"48 Hours" preview

Former New England Patriots player Aaron Hernandez was convicted of murder in 2015 and later died by suicide in a Massachusetts prison. Best-selling author James Patterson calls it the most troubling crime story of our time. He takes on the case in his new book, "All-American Murder," which raises the question of whether a degenerative brain disease linked to football could have caused his violent behavior. Patterson joins "CBS This Morning" to preview his "48 Hours" special, which airs Saturday, Jan. 20 at 10/9c on CBS.

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