Alan Jackson, who transitioned from a Los Angeles prosecutor to a prominent defense attorney, is now embroiled in one of his most challenging Hollywood legal battles. He is representing Nick Reiner, son of the renowned filmmaker Rob Reiner, who faces accusations of murdering both his parents in their Brentwood residence.

The couple was discovered with fatal stab injuries in their upscale Brentwood, California home, casting a shadow over the celebrity-studded neighborhood.

Having managed a series of high-profile cases, this trial could be Jackson’s most significant yet. He finds himself opposing the Los Angeles District Attorney’s Office, the very place where he once held a leading position.

In an earlier chapter of his career, Jackson was seen alongside music producer Phil Spector during a recess in Spector’s murder trial on April 25, 2007, at the Los Angeles Superior Court. (Image credit: GABRIEL BOUYS/AFP via Getty Images)

Jackson’s legal prowess was demonstrated in 2009 when he secured a conviction against Phil Spector, the music mogul who shot actress Lana Clarkson at his California estate, famously known as the Pyrenees Castle.

Spector passed away in prison in 2021 at the age of 81.

Alan Jackson, deputy district attorney, addresses the jury during the prosecution’s rebuttal to closing arguments in the retrial murder case of music producer Phil Spector on Wednesday, March 25, 2009, in downtown Los Angeles. (Al Seib/Los Angeles Times via Getty Images)

But after leaving the DA’s office, Jackson built a reputation as an elite defense attorney on both coasts.

He is a partner at Werksman Jackson and Quinn, based in Los Angeles, but successfully represented Oscar-winning actor Kevin Spacey in a sex assault case and accused killer Karen Read in Massachusetts.

Actor Kevin Spacey (L) attends his arraignment on sexual assault charges with his lawyer Alan Jackson at Nantucket District Court on Jan. 7, 2019, in Nantucket, Massachusetts. (Nicole Harnishfeger-Pool/Getty Images)

The charges against Spacey were dismissed in 2019, and Read was acquitted of all homicide-related charges in the death of her boyfriend, Boston cop John O’Keefe, after a weeks-long trial that ended in June.

Read’s trial, while it didn’t involve a rich and powerful Hollywood insider, captivated the country after her defense blasted a shoddy police investigation and raised claims she was framed.

She is currently fending off a wrongful death lawsuit from O’Keefe’s family while pursuing a lawsuit of her own against the group she alleges framed her.

Karen Read and her attorney, Alan Jackson, arrive at Norfolk Superior Court for jury deliberations, Wednesday, June 18, 2025, in Dedham, Mass. (Richard Beetham for Fox News Digital)

Prosecutors had claimed Read backed into O’Keefe after a night out drinking and left him for dead on an acquaintance’s lawn during a blizzard. The defense argued she never hit him and something — or someone — else caused his fatal injuries.

Read was ultimately convicted only of drunken driving and sentenced to a year of probation. No one else has been charged or named a suspect in O’Keefe’s death.

Jackson returned to Los Angeles in time for the Fourth of July holiday, where he was seen cruising in a Shelby Cobra replica – powered by a 351 Stroker he described as “a fire-breathing dragon.”

Alan Jackson takes his Shelby Cobra replica roadster for a spin in Los Angeles, Friday, July 4, 2025.  (Fox News Digital)

In 2022, he represented the disgraced Hollywood mogul Harvey Weinstein at trial on rape charges in Los Angeles.

Weinstein was convicted and also convicted in a separate trial on similar charges in New York.

It was a rare loss. According to Jackson’s firm, he has a success rate of over 96% at trial and has taken more than 85 cases to jurors for verdict.

Former film producer Harvey Weinstein (L) and his attorney Mark Werksman (C) listen as Weinstein attorney Alan Jackson (R) speaks in court during a pre-trial hearing for Weinstein, who was extradited from New York to Los Angeles to face sex-related charges at Clara Shortridge Foltz Criminal Justice Center on July 29, 2021, in Los Angeles, California. (Etienne Laurent-Pool/Getty Images)

Reiner faces murder and other charges in his parents’ deaths. He is expected in court Wednesday for an arraignment, which had been held up as he awaited medical clearance to appear in court after his arrest on Sunday in Los Angeles.

“Every inmate has to be medically cleared before they can be transported to court,” Jackson told reporters Tuesday. “He has not been medically cleared. It’s just a procedural issue.”

Rob Reiner (center) and wife Michele Singer (left) and son Nick Reiner (right) attend Teen Vogue’s Back-to-School Saturday kick-off event at The Grove on Aug. 9, 2013 in Los Angeles, California.  (Michael Buckner/Getty Images for Teen Vogue)

According to DA Nathan Hochman, the 32-year-old Nick Reiner fled his parents’ home after allegedly killing his 78-year-old father and 70-year-old mother with a knife early Sunday. Police arrested him at Exposition Park hours later. 

The younger Reiner could face life in prison without parole if convicted. Hochman’s office has not yet revealed whether prosecutors intend to seek the death penalty. 

In another ongoing case, Jackson is representing fellow Los Angeleno Fraser Bohm, a BMW-driving 24-year-old accused of four counts of murder in connection with a deadly crash that killed four Pepperdine University students on Pacific Coast Highway in Malibu in October 2023.

Fraser Bohm appears in Los Angeles Superior Court on Oct. 8, 2025, in Los Angeles, California. Bohm is accused of killing four Pepperdine University students while driving at high speed on Pacific Coast Highway in Malibu. Bohm next court date is Nov. 10, 2025. (Frederick M. Brown for New York Post via Pool)

The victims were Niamh Rolston, 20, Peyton Stewart, 21, Asha Weir, 21, and Deslyn Williams, 21 — all seniors and members of the Alpha Phi sorority at Pepperdine.

In court in November, Jackson argued that the prosecution’s case is not enough to justify the “implied malice” murder charges under California law, which requires prosecutors to prove that the suspect intentionally committed an act that is likely to cause death and consciously disregarded the danger.

Attorney Alan Jackson addresses the media outside of Superior Court in Los Angeles, California, Tuesday, Dec. 16, 2025. Jackson is representing Nick Reiner, who is accused of murdering his parents, Rob Reiner and Michele Singer-Reiner, this week. (Derek Shook for Fox News Digital)

Jackson’s successful prosecution of Spector relied on the implied malice theory — alleging at trial that while he did not intend to kill Clarkson, he caused her death with reckless behavior and creating an extreme risk.