The trial focused on trace evidence handling and chain of custody procedures, with LAPD and FBI criminalists detailing collection and examination of hair, fiber, and biological evidence from gloves and victims' clothing. Defense attorney Blasier delivered pointed cross-examinations systematically exposing documentation failures, undisclosed reports, and potential contamination from the Coroner's office, establishing significant gaps in the evidence chain of custody.

• Blasier reveals 5-page Lewis report written in January was not disclosed to defense until the day before her testimony
• Cross-examination establishes Nicole Brown's clothing from Coroner arrived moldy from improper storage
• Brockbank provides detailed hair and fiber collection testimony but discrepancies emerge with FBI examiner Deedrick's findings
• Blasier establishes Yamauchi handled the Rockingham glove with no documented oversight
• New XL gloves measured 1.25 inches larger than the evidence gloves in question