Commonwealth v. Read — Trial ArchiveMarie Russell
Dr. Marie Russell is a retired emergency physician with 29 years as an attending physician at LA County USC Medical Center and prior coroner's office experience, called by the defense to offer an alternative explanation for the wounds on John O'Keefe's right arm. She initiated contact with the defense herself after reading Boston Globe coverage of the case, and was permitted to testify after surviving voir dire challenges to her qualifications in both trials. Her core opinion — that parallel striations, punctate marks, and an arch pattern near the wrist are consistent with a large dog attack and inconsistent with a motor vehicle strike — directly countered the prosecution's theory that Read's Lexus caused O'Keefe's injuries.
Trial 1 vs Trial 2
In Trial 1, the prosecution's challenge was primarily focused on Russell's qualifications and the compressed timeline of her opinion, with voir dire conducted by ADA Lally before a relatively streamlined direct and cross. In Trial 2, the examination expanded significantly — spanning parts of two trial days — with prosecutor Brennan adding new lines of attack including the sequestration violation, Russell's use of a trial photograph on a professional listing service, the absence of dog DNA on O'Keefe's clothing despite Russell's acknowledgment that bites should leave DNA, and a detailed confrontation with Dr. Walsh's Armed Forces pathology report. The Trial 2 cross also introduced a more systematic challenge to Russell's methodology using her own cited literature, a technique not employed in Trial 1.