[s3e20] Imposter -

Palmer leaves the real Harm bound to a chair in his apartment, which he has booby-trapped with a motion sensor bomb. The bomb is set to detonate if Harm moves or after eight hours.

The recurring antagonist who first appeared in this episode to plague the JAG team. Sarah MacKenzie [S3E20] Imposter

Played both the real Harm and the imposter (Palmer in disguise). Clark Palmer Palmer leaves the real Harm bound to a

The real Harm reaches the courtroom just as Palmer (as Harm) is about to expose Vickers to a lethal aerosol nerve gas. A physical fight ensues between the two "Harms" in the hallway, where the real Harm eventually unmasks and subdues Palmer. Key Cast and Characters Significance David James Elliott Harmon Rabb Jr. Sarah MacKenzie Played both the real Harm and

The episode is noted for its "Mission: Impossible" style face-masking technology, which was a popular trope in late 90s action media.