Harm's skills as a lawyer are challenged when he defends a female ensign who claims she murdered an officer because her ""instincts"" told her he meant to hurt her.

The ensign claims that when the officer entered her apartment on false pretenses, she felt threatened by him and killed in self-defense. Though the defense is decidedly thin -- no weapon was even found on the man's body -- Mac and Harm decide to stick with the case and are determined to help the ensign remember forgotten details of the event.