Article continues below advertisementRob Reiner's son Nick was seen calmly walking near his parents' Brentwood, Calif., home within hours of allegedly murdering his mom and dad.In newly released surveillance footage, the troubled drug addict, 32, was captured on camera strolling past a gas station just before midnight on Saturday, December 13.The video, obtained by The New York Post, featured Nick in jeans, a long-sleeved shirt and a hat, as he carried a backpack over his shoulder and walked in the opposite direction of both the security camera and the Reiners' Los Angeles home.