Nick Reiner has officially been charged with two counts of first degree murder with a “special circumstance” for the December 14 stabbing deaths of his parents Rob Reiner and. He could face the death penalty because of that special circumstance provision,

"From my interactions with Nick, he seemed like a gentle guy," Douglas Shaffer, who worked on Being Charlie as an executive producer, tells PEOPLE. Nick wrote the movie's script with friend Matt Elisofon, based in part on Nick's experiences with drug addiction from an early age, while dad Rob directed the film.

"All in the Family" star Rob Reiner and wife Michele found stabbed to death in Brentwood home. Rob's son Nick Reiner was later arrested and charged with murder.

Podcast clips where Nick Reiner shares his struggles with addiction have resurfaced after the 32-year-old allegedly killed his parents, Rob Reiner, 78, and Michele Singer Reiner, 70, earlier this week.

New video shows the moments before Nick Reiner's arrest. He's accused of killing his parents, Rob and Michele Reiner.

Nick Reiner has been charged with two counts of first-degree murder in the deaths of his parents, prosecutors say. Under California law, that makes him eligible for the death penalty.