When Lt. Austin receives a strange fax of the itinerary for someone called "Sheppard", she and Commander Rabb don't realize the seriousness of this fax. Later, Austin is shot and critically injured while at JAG headquarters by the person who accidentally sent the important fax to the wrong number. Rabb learns the shooter must be the infamous assassin known as "Hemlock;" a person that no one has seen long enough to give a description. Now, Rabb must find out Sheppard's true identity in order to find the assassin before he strikes again.

When a young attorney is murdered shortly after he decides to file a sexual harrassment claim against his employer, Briscoe and Curtis quickly discover that the alleged harasser and his wife each have an excellent motive for murder.

Dr. Sam Ryan's advice is sought on when the arranged marriage of a Vietnamese student, Tran, to an older man goes tragically wrong when a charred body is found in the burnt out restaurant owned by Tran's father - The victim is the man which Tran was forced to marry. Sam investigates the murder.