Gabby Petito case: New 'burn after reading' letter from Brian Laundrie's mother released to family

New chilling details were revealed in a "burn after reading" letter from Brian Laundrie's mother including promises to "show up with a shovel, and garbage bags." The court released the letter to Gabby Petito's family after a judge denied the Laundrie family's request to keep the letter sealed. FOX's Caroline Elliot reports more on the fight for justice.