The recurring antagonist who first appeared in this episode to plague the JAG team. Sarah MacKenzie
" Imposter " is the 20th episode of the third season of the military legal drama , which first aired on April 21, 1998. It is widely remembered for its high-stakes plot involving a literal imposter attempting to commit an assassination in a courtroom under the guise of the series protagonist. Plot Summary [S3E20] Imposter
Details on other throughout the series.
Played both the real Harm and the imposter (Palmer in disguise). Clark Palmer The recurring antagonist who first appeared in this
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. Plot Summary Details on other throughout the series
The episode centers on a plot by , a disgraced and rogue former agent of a shadowy federal agency. Palmer’s objective is to assassinate Lt. Colonel Ronald Vickers , a Marine officer on trial for allegedly violating a chemical weapons treaty by selling biological agents to Algerians.
The episode is noted for its "Mission: Impossible" style face-masking technology, which was a popular trope in late 90s action media.