Tom Lambert served as a plaintiff's attorney in the civil trial, where he handled much of the forensic and DNA evidence that formed the backbone of the case against Simpson. He examined a string of key forensic witnesses — LAPD criminalists Gregory Matheson, Dennis Fung, and Collin Yamauchi, DNA analysts Robin Cotton, Gary Sims, and Renee Montgomery, and experts on both sides of the contamination debate — building the plaintiff's scientific case across numerous trial days. In closing argument, Lambert systematically challenged the defense's DNA contamination theory by reading back defense expert Dr. John Gerdes' own admissions that the RFLP results were reliable and that laboratory controls showed zero contamination, exposing what he cast as a strategy built on insinuation rather than evidence.