One of the newly released videos appears to show Nick Reiner, 32, moments before his Dec. 14 arrest near the University of Southern California. In the video, he's wearing jeans, a striped jacket and a baseball cap. He's seen with a red backpack slung over one shoulder as he enters a gas station and purchases a drink.

Rob Reiner and his wife Michele Singer Reiner died from "multiple sharp force injuries," per the Los Angeles Medical Examiner. Their son Nick Reiner has been charged with their murders.

Many are trying to understand the unexplainable deaths of Rob Reiner and Michele Singer Reiner, allegedly at the hands of their son.

Rob Reiner's daughter Romy had to learn her parents were dead during two separate moments after discovering her father with his throat slit inside of his Los Angeles home. While Romy, 28, was the one to find her deceased dad,

"Rob and Michele Reiner were wonderful ... generous people, always coming up with ideas for how to make the world better, kinder," the actress wrote.