Nick Reiner appears in a Los Angeles courthouse on Wednesday for the first time since he is accused of killing his parents, Rob Reiner and Michele Singer Reiner.

While in court, Nick Reiner, 32, appears to be wearing an all blue vest. The only words he utters during the brief appearance are, “Yes, your honor.”

His arraignment is pushed back till January 7, the second time it was delayed since he was arrested Sunday in his parents' deaths.

The Los Angeles County Medical Examiner's Office on Wednesday listed the couple's cause of death as multiple sharp force injuries.

Many jump to the conclusion the Reiners were bad parents to their middle child, somehow responsible for their demise at their troubled son's hands. Critics highlight Nick Reiner’s early signs of addiction and meth the teen reportedly entered rehab for around his 15th birthday.

Joining Nancy Grace:

• Heather Michaels - Reiner family friend and neighbor, Investigative Reporter, Producer and Social Justice Advocate, Instagram: HeatherMichaelsTV, Facebook: HeatherSMichaels
• Troy Slaten - Los Angeles Criminal Defense Attorney, Slaten Lawyers; Twitter @TroySlaten
• Caryn Stark - Forensic Psychologist, renowned TV and Radio trauma expert and consultant, www.carynstark.com, Instagram: carynpsych, FB: Caryn Stark Private Practice
• Joseph Scott Morgan - Professor of Forensics: Jacksonville State University, Author, "Blood Beneath My Feet", Host: "Body Bags with Joseph Scott Morgan", Instagram @JoScottForensic
• Jaclyn Roth - Editor in Chief of OK! Magazine, website: jaclynaroth.wixsite.com/jaclynroth, Instagram & Twitter: JRoth104
• Sydney Sumner - Investigative Reporter, ‘Crime Stories’

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Talk about a backseat driver! An elderly woman unlocks her car door one morning only to find an escaped inmate hiding inside!

A husband caught on cam dragging his wife's dead body from their apartment complex...is finally back on U-S soil. He fled to Peru with their kids after the crime. Plus, owners of a tree lot left tree-mendously upset after their giant Santa is snatched! Jennifer Gould reports.

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Michele and Rob Reiner leave Conan’s party without their son after his off-putting behavior, like wearing a hoodie to a formal event and interrupting Bill Hader’s private conversation, leads to an embarrassing public row.

Reiner, however, doesn’t make his own way to Brentwood. Instead, he pops up in Santa Monica at 4 a.m. Sunday morning, checking into The Pierside hotel. Desk staff don’t notice anything off about Reiner’s appearance, but the next morning, housekeepers find sheets covering the windows, and blood all over Reiner’s bedding and shower.

The Reiners’ troubles with their middle child have been bubbling to a head for months. Every photo of the family from the September premiere of Rob’s latest film, "Spinal Tap: The End Continues," picture the 32-year-old sporting a deep scowl.

By November, Nick Reiner moves back into his parents’ guest house, which he’s trashed on multiple occasions, leading up to a blowout fight the day after Thanksgiving that left Michele “at her wits’ end.”

Ahead of Reiner’s first appearance, renowned defense attorney Alan Jackson enters the LA County courthouse, telling reporters he’s representing Nick Reiner.

Jackson says his client is still undergoing a medical evaluation at the infamous Twin Towers Correctional Facility, where Reiner is rumored to be held on suicide watch.

Joining Nancy Grace:

• Philip Dubé - Court-Appointed Counsel, Los Angeles County Public Defenders: Criminal & Constitutional Law; Forensics & Mental Health Advocacy; X: PhilipCDube, IG: PhilipDube, YouTube: PhilipDube3922
• Dr. Bethany Marshall - Psychoanalyst, Author: "Deal Breaker," and featured in hit show "Paris in Love" on Peacock; Instagram & TikTok: drbethanymarshall, X: @DrBethanyLivee
• Scott Eicher - A founding member of the FBI’s Cellular Analysis Survey Team (C.A.S.T); Historical Cellular Analysis Expert; Former FBI agent of 22 years; Former Police Officer and Homicide Detective with Norfolk Virginia Police Dept. having served 12 years; Currently with Precision Cellular Analysis handling Criminal, Defense and Civil Cases
• Rob Shuter - Host: Naughty But Nice Podcast, Author of Newly-released Novel “It Started With A Whisper;" Former Publicist of Sean Combs; IG: @naughtygossip
• Dr. Kendall Crowns - Chief Medical Examiner Tarrant County (Ft Worth), Host of Podcast, "Mayhem in the Morgue," and Lecturer: Burnett School of Medicine at TCU (Texas Christian University)
• Kayla Brantley - Reporter-At-Large for DailyMail.com and Host of DailyMail’s Podcast: 'The Trial of Diddy;' X: @_KaylaBrantley, Instagram: @KaylaBrantley
• Sydney Sumner - Investigative Reporter, ‘Crime Stories’

See omnystudio.com/listener for privacy information.