Harm teams up with Maj. Sarah MacKenzie and Lt. Roberts to investigate, together with Special Assistant Webb, the theft of the Declaration of Independence, which was stolen by Colonel O’Hara. O’Hara, who turns out to be Mac’s uncle, claims he has taken control of it to remind the people - and especially the politicians - of its meaning and spirit. Locations: East of Yuma, Arizona; Red Rock Mesa; Washington, D.C.; Falls Church, Va.

Harm and Mac face off on opposite sides of the courtroom at the trial of a Navy Seal accused of murdering his closest friend during a mission against terrorists. Despite evidence to the contrary and the accused’s unwillingness to cooperate, Mac, who is defending him, feels there’s more to the story than meets the eye. Her fervor causes Harm, who is prosecuting the case, to dig deeper into the dead boy’s personal life. It is Harm who discovers that it isn’t a case of murder -- but, in fact, the victim begged his friend to kill him in order to keep a secret from his father, a strict former Navy petty officer.

Harm and Mac investigate a female fighter pilot’s charge of sexual harassment against her commanding officer. The pilot, Lt. Marilyn Isaaks, claims to have been sexually harassed by her commanding officer, Capt. Boone (guest star Terry O’Quinn), after being grounded. Capt. Boone claims he grounded her because she’s a bad pilot, not because she’s a woman. Harm and Mac are called in to conduct a thorough investigation into the allegations, and do so under tremendous pressure from Congresswoman DeLong (guest star Dee Wallace Stone). She forces Boone to schedule Isaaks for a training flight -- an action that Harm feels will have deadly consequences.

Harm and Mac investigate the kidnapping of a lieutenant’s son from a base in Northern Ireland. Evidence left at the scene lead them to the boy’s father, an IRA leader.

While on their day off, Harm takes Mac for a flight in his vintage airplane, only to be forced to make an emergency landing in a mountain clearing because of mechanical problems. While in search of help, they unwittingly surprise a band of poachers who have just murdered a game warden and who are now determined to kill Harm and Mac. Their lives in jeopardy, Harm and Mac must utilize every evasive military maneuver they’ve ever learned in order to escape the murderers who are now hunting them.

Harm is assigned to escort a rambunctious and ravishing Romanian princess, whose life has been threatened if her father petitions to join NATO. Meanwhile, Bud wrestles with starting a romance with Ens. Harriet Sims.

A Colombian drug lord wants to deal for the life of a Marine who was left behind when the covert mission to kidnap him went awry.

Harm and Mac defend a former Navy Seal, now a homeless man, but still a highly trained killing machine, who is accused of using excessive force in killing three men who tried to hold up a convenience store. It seems like an open-and-shut case of triple homicide until Harm and Mac discover that the former Seal, Paul Bauwer acted instinctively at the store as he sought to protect a young boy -- who happened to be his estranged son but didn’t recognize him. Bauwer, embarrassed by his own vagrancy, wants to keep his identity a secret from his son. As a result, Harm and Mac must devise a successful defense without divulging their client’s relationship to the only witness to the incident, while at the same time proving that Bauwer acted in an appropriate manner.

Hospitalized with a knee injury, Harm is forced to take action when the Hamas, a terrorist Islamic Resistance group, takes the hospital hostage. An Israeli diplomat undergoing a heart transplant provides the Hamas terrorists with the perfect negotiating tool. They take over the operating room -- as well as the entire hospital -- and use the diplomat as leverage while demanding the release of one of their imprisoned leaders. Meanwhile, Mac is trapped in the hospital cafeteria trying to negotiate with two terrorists.

Harm, Mac and Bud are assigned sea duty to be official observers during a joint war games exercise between U.S. and Russian naval forces, but the games take a deadly turn when the rival captains decide to make the battle real -- and Harm, Mac and Bud are trapped on board the warring ships. The captains are bitter enemies from Cold War days and have deemed this their final grudge match. Both are determined to make it a battle to the death, even if it means going down with their ships -- and taking everyone on board with them -- and it’s up to Harm and Bud to defuse what could become World War III.

Harm and Mac find themselves courtroom adversaries when Mac is assigned to defend an admitted wife abuser whom Harm is prosecuting for the murder of his wife’s boyfriend. Mac finds herself detesting the man whom she is supposed to be defending -- a man who reminds her all too well of her abusive father. Meaning well, Harm advises Mac that she’s letting her personal feelings get in the way of her professional duties, but the advice enrages Mac and she takes out her anger on Harm as well as her client.