Inside Edition for Friday, October 22, 2021

Investigators are trying to determine why a prop gun fired by Alec Baldwin on a movie set turned deadly. Also -- officials have confirmed that the remains found in the Florida nature preserve belonged to Brian Laundrie. There are many lingering questions, most of all his cause of death. Plus, two months after a young family was found dead along a California hiking trail officials now know what killed them. And a bride who took pictures to celebrate not getting married.