Gabby Petito's Parents Will Get Copy of 'Burn After Reading' Letter Written by Brian Laundrie's Mom

In the letter, Roberta Laundrie vows to help her son “dispose of a body” if need be. Subscribe to People ►► http://bit.ly/SubscribetoPeople #PEOPLE Catch up on the latest celebrity news, top stories and more: https://www.youtube.com/watch?v=6wQfUfqL8Ms&list=PLzS8B57pacxwyLPuFYvWxzqvoRrBc4GqA…

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