The prosecution spent much of the day presenting Dr. Lakshmanan’s testimony on chain-of-custody records and methods for estimating time of death, including body temperature, rigor and livor mortis, vitreous humor potassium, and stomach contents. Lakshmanan testified that these methods could not establish a precise time of death; stomach contents favored death within two hours of the last meal and suggested approximately 10:00–10:30 p.m., but he refused to narrow the established range further. On cross-examination, Shapiro challenged the Coroner’s office and emphasized that Lakshmanan could not confirm the number of killers, number of weapons, or precise time of death. The day also included a dispute over a previously excluded reference in exhibit 363, issues raised in the Siglar letter, and testimony that a trial consultant coached witnesses on courtroom presentation.

• Prosecutor Kelberg admitted playing inadmissible evidence (gun incident reference) and was forced to create a redacted version of exhibit 363.
• Heated dispute erupted between Kelberg and Shapiro over sidebar statements, with Kelberg accusing Shapiro of 'posturing for the camera.'
• Exhibit 365, a letter from Coroner criminalist Gary Siglar, was introduced; testimony distinguished factual errors or events from disputed or opinion-based recommendations and other internal issues.
• Dr. Lakshmanan testified that time of death can only be estimated as a range, not pinpointed, due to biological variability and environmental factors.
• Stomach contents analysis suggested death around 10:00–10:30 PM, but Lakshmanan refused to narrow the estimate further.
• Revelation that trial consultant 'Mr. Tuno' was brought in to coach witnesses on courtroom presentation.
• During cross-examination, Shapiro emphasized that despite eight days of testimony and about 200 hours of preparation, Lakshmanan could not confirm the number of killers, number of weapons, or precise time of death.