Harm discovers evidence that his father, an MIA from the Vietnam War, may be alive and under KGB control in Russia.

A top female helicopter pilot is accused of disobeying an order---to cease her affair with a married enlisted man, and a Congresswoman is determined to ensure the pilot's fair treatment as a potential court-martial looms.

When a Marine colonel defies orders from superiors, as well as the State Department, and rescues his men who are being held and tortured by a Haitian warlord, he is court-martialed. Harm and Mac are assigned as prosecutors and are shocked when they find they must go head-to-head with Chegwidden.

Harm risks ending the career of his mentor, as well as their friendship, when he investigates a training accident that killed two civilians.

When a former Vietnam POW arrives at JAG headquarters to report a murder he's just committed, Harm confronts a very complex individual who may know something about his MIA father.

When a fully armed and piloted Navy F-14 disappears during a storm, the JAG team is called in to investigate all possible scenarios, from pilot suicide and terrorism to the curse of the Bermuda Triangle and UFO interference.

International tensions mount as Harm, Mac and Bud board an aircraft carrier in the Sea of Japan to investigate the accidental shooting down of a North Korean civilian airline by Navy jets.

When Harm, Mac and Bud are ordered to run a routine background check on a Navy SEAL who is a candidate for the Medal of Honor, they uncover unsavory information that may make him unworthy.

Harm & Bud are sent to Twenty-nine Palms Marine Base to investigate the mid-air collision of 2 helicopters & subsequent crash of one helicopter which killed the pilot.

Harm meets with a Russian 'contact' in order to purchase documents that will prove his father was taken to Russia after being shot down in Vietnam. However, during the transaction, they are interrupted by a KGB agent, Col. Parlovsky who shoots & kills the Russian, then runs off as FBI agents show up, finding Harm over the body, with the gun & documents he wrestled away.

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.

Annie Pendry, a widow, comes to Harm for help after her young son, Josh, witnessed a murder while on a class trip to Andrews Air Force Base. After Harm and Josh are the targets of a drive-by shooting, Harm moves Josh and Annie into his apartment -- and into his life. Harm discovers that the original crime and the drive-by shooting are tied to a ruthless international arms dealer, but not before Josh is kidnapped by the dealer in order to silence him as a witness.

Admiral Chegwidden investigates the apparent suicide of his mentor, Admiral Clancy, who allegedly shot himself while on a hunting trip with several friends. Chegwidden can't believe that his friend would kill himself, and discovers that someone else may have actually pulled the trigger.

Due to frustration at being unable to wrest custody of his son from his drug addicted wife, Corporal Wetzel was distracted during a war game exercise and crashed a tank. Accused of dereliction of duty, Wetzel admits to being diverted on the job, but insists that Mac and Harm must keep him out of jail, since his arrest would certainly mean losing his son.

When a luxury yacht owned by a reputed South American drug trafficker mysteriously sinks and the Navy is suspect, Harm, Mac and Bud are put on the case. Meanwhile, Artemus Sullivan, a World War II Navy veteran, with the help of his aged cronies, devises plans from a nursing home to make sure the drug dealer responsible for Sullivan's grandson's death is brought to justice. But when Sullivan is kidnapped by the drug dealers, his mettle is tested, as is that of Harm and his team as they race to rescue the war hero.

Harm, Mac, and Bud investigate claims of sexual harassment aboard an aircraft carrier. Mac's boyfriend, Dalton Lowne, is the defendant's attorney, and Mac is shocked when she discovers that he has been copying information from her files.

Following her ugly break-up with Dalton Lowne, Mac has reason to believe that he's stalking her -- until he's killed during an apparent car-jacking and the stalking continues. Much to Harm's dismay, the strain of the two events pushes Mac to the edge -- and to the bottle. Concerned for Mac's safety and sobriety, Harm intensifies his search for Mac's tormentor before he causes her bodily harm.

When Harm takes young Josh on a weekend cruise for Navy families aboard the frigate, pleasure turns to fear when the ship is taken over by terrorists who intend to fire missiles at Cuba. After Josh and Harm manage to elude the terrorists, they try to contact authorities about the situation. But the plan goes awry when Harm is found out, and he then tries to strike a deal with the terrorists while also racing to foil the plot before the innocent civilians get hurt.

Mac arrives at Harm's apartment and is surprised to see that he has forgotten she was coming over and that he is getting to leave with a firearm. Stalling him, she gets him to tell her the story 2 years ago of the murder of his then-girlfriend, Lt. Diane Schonke, an Academy classmate, after her ship, the USS Seahawk docked in Norfolk. When Harm shows Mac a picture of Diane, Mac is stunned to see that Diane looks just like her.

Clark Palmer, a renegade government agent, breaks into Harm's apartment and incapacitates him. Palmer then makes a cast of Harm's face in order to prepare a mask that he can wear to pass for Harm. Palmer plans to murder the key witness in the trial at which Harm and Mac are currently prosecutors.

Members of the JAG team encounter resistance from Navajo tribal elders when they insist on DNA testing to verify that human remains are those of heroic Navajo ""code-talker"" Jimmy Blackhorse, who has been missing since World War II. Forensic pathologist Lt. Cmdr. Teresa Coulter joins Harm and Mac on the case.

Political pressures come into play after an F-14 pilot clips a ski helicopter during a NATO exercise over Italian airspace, killing six civilians. Harm and Mac are assigned to opposite sides in the case, but the Italian government wants to prosecute on its own.

Bud has his hands full when his obnoxious and abusive father, Big Bud, and his younger brother, Mikey, arrive in town for his wedding. Big Bud throws a stag party at a boisterous strip club where Harm's dress whites end up on the body of a stripper. A fight breaks out and Harm, Bud and Chegwidden find themselves in the slammer on the day of the wedding.

(The time is 1980, several Russian soldiers are guarding a prisoner who is Harmon Rabb, Sr. at a train station. The KGB take a photo of the persons gathered there - a photo which has made its way to Harmon Rabb, Jr. in the present time.)