The mother of Brian Laundrie, the man who killed his fiancée Gabby Petito and later himself in 2021, wrote an undated letter marked "burn after reading" to her son that said she would help him "dispose of a body." Roberta Laundrie has said the letter was written before her son’s trip with Petito, and one of her attorneys released a statement saying it was “in no way related to Gabby,” although Petito’s family has challenged those assertions. Petito's parents have filed a lawsuit against Laundrie's parents. | 'Burn after reading' letter found in killer's backpack