Omar Richard Deen was convicted of murdering his mother Rachel Deen and Police Chief J. Leonard Speer at his mother's equipment yard in Calipatria in April 1998. The case centered on a dispute over his father's estate worth several hundred thousand dollars. Deen fled to Mexico after the killings, was apprehended the same day, and confessed to the crimes. The jury found special circumstances that Rachel Deen was killed for financial gain and Chief Speer was murdered while performing his official duties, setting the penalty at death.
The California Supreme Court reversed the entire judgment based on the trial court's handling of a challenge for cause against Juror No. 5, a 60-year-old former police identification technician who had worked for the El Centro Police Department for 13 years. As Acting Chief Justice Corrigan explained, the juror 'had known Chief Speer for a number of years, had business dealings with him, knew his wife, would have coffee with him from time to time, and campaigned for him when he ran for sheriff.' The juror admitted that 'in that sense, a friendship existed' and acknowledged he had heard details about the case from law enforcement officers.
The court found particularly troubling language in the trial judge's ruling. As Corrigan wrote, the judge characterized himself as 'grasping for a possible answer' that would support a challenge and 'begging for case authority that would permit it to grant the challenge.' The judge stated he was 'stuck' with the juror's self-assessment despite harboring 'substantial misgivings' about seating him.
The case had a complex procedural history, proceeding through four phases: competency, guilt, sanity, and penalty. The competency phase was heard by a separate jury and different judge. Juror No. 5 was seated relatively late in the selection process when the defense had exhausted its peremptory challenges. In his questionnaire, the juror had written that he would have difficulty keeping an open mind and that the accusation of killing a police officer would prevent him from being fair and impartial.
Defense counsel argued strenuously for the juror's removal, with attorney Beaudikofer warning they were 'in dangerous waters' with a juror who had detailed knowledge of the offense from witnesses. The prosecution countered that Juror No. 5 had said he could be 'fair and impartial' and 'was not equivocal.' But the defense pressed that 'when his starting point is announced, a red flag goes up and everything else that is involved with this potential juror needs to be considered within that context.'
The Supreme Court clarified that trial judges have broader authority than previously understood when evaluating bias challenges. Corrigan explained that the court 'misunderstood existing precedent to rigidly hold that if a juror said they could be impartial, follow the law, that's good enough.' The opinion established that judges must make an objective determination based on the 'totality of circumstances' and can excuse jurors who would be 'unable to faithfully and impartially apply the law' even when they claim they can be fair.
Justice Groban filed a concurring opinion, joined by Justices Liu and Evans, addressing the broader issue of mental illness in death penalty cases. Groban observed that 'like so many of our death penalty appeals, the record contains significant evidence that defendant Omar Richard Deen, starting at a young age, suffered from severe mental illness.' He noted that multiple experts testified Deen suffered from childhood-onset paranoid schizophrenia and suggested the court may eventually need to determine whether 'the same reasoning' that exempts intellectually disabled individuals from execution should apply to those with severe mental illness.