The episode is noted for its "Mission: Impossible" style face-masking technology, which was a popular trope in late 90s action media.
Palmer captures Harmon "Harm" Rabb Jr. at his apartment on the morning of the trial. He incapacitates Harm and uses a sophisticated process to create a life-like mask of Harm’s face, effectively assuming his identity. [S3E20] Imposter
Harm's partner who has to handle the trial while suspicious of "Harm's" behavior. Bud Roberts The episode is noted for its "Mission: Impossible"