Dr. Henry Lee delivered extensive expert testimony for the defense, systematically analyzing bloodstain patterns, imprint evidence, and crime scene procedures to argue that LAPD mishandled evidence and that a second person may have been present. Lee testified that red ball-like substances inside the socks were consistent with liquid blood deposition while no leg was inside, that imprint patterns on Goldman's jeans were inconsistent with the Bruno Magli shoe, and that sequential photographs showed the eyeglasses envelope in different positions and a blood drop appearing in a later image. The day was punctuated by administrative disputes over Fuhrman tape access and evidence-handling protocols.

• Dr. Lee testified that red ball-like substances inside the socks were consistent with liquid blood deposition while no leg was present, supporting MacDonell's transfer theory
• Lee identified imprint patterns on Goldman's jeans and the crime scene walkway inconsistent with the Bruno Magli shoe, suggesting a second person may have been present
• Lee testified that sequential photographs showed the eyeglasses envelope changed position, a blood drop appeared in later photos, and trace material disappeared
• Lee walked the jury through proper forensic crime scene procedures and connected each step to alleged LAPD failures in evidence collection and handling
• Defense sought a stipulation on socks evidence handling; after the prosecutor refused, Judge Ito said Dr. Lee could testify about what happened, avoiding the need for defense counsel to take the stand
• Judge declined to order Fuhrman tapes copied but proposed distributing DA transcripts under strict no-copy conditions pending McKinny's consent