The elder son of beloved director Rob Reiner and his wife, Michele Reiner, eulogized his parents, who were "the center" of his life, in a Substack essay published Friday, four months after the pair were found stabbed to death in their Los Angeles home.

Nick Reiner, the couple's younger son, who long struggled with drug addiction and mental illness, has been charged with two counts of first-degree murder in connection to their deaths, to which he has pleaded not guilty.

"What the hell do you say to someone who is living through this reality?" Jack Reiner wrote in his essay, his first public comment on his parents' deaths.

"We lost more than half of our family that night in the most violent way imaginable. Sure, any loss of a parent is devastating, but nothing compares to losing both of them at the same time and, on top of that, having your brother be at the center of it. It's almost too impossible to process."

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