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Who Is the Las Vegas Gunman?

Originally aired on 10/05/2017

In the wake of the largest mass shooting in modern U.S. history, experts weigh in on the mind of a mass killer, in the hopes of preventing another tragedy. Crime correspondent Melissa Moore is in Nevada to find out who the perpetrator really was.

Guests: Melissa Moore , Dr. Michael Welner , Tim Clemente , Big Kenny , John Rich , Heather Melton