Harm and Meg are investigating the murder of a Navy Lieutenant which they think is related to several previous murders over the last year. In addition to a bit of Jurisdiction Friction with a civilian detective, the situation is further complicated when it seems that the Thai Ambassador's wife might be involved somehow.
"Déjà Vu" includes examples of the following tropes:
- Aluminum Christmas Trees: Yes, that is the President of the United States entertaining a crowd by playing the Saxophone at a party. The '90s were a weird time.
- "Awesome McCool" Name: When Harm traveled to Vietnam to look for his father, he was aided by a former special ops soldier named Colonel Stryker.
- Badass in Distress: Harm in the climax.
- Big Damn Heroes: Meg and the Theme Song show up just in time to save Harm's life.
- Colonel Badass: Colonel Patano. It's made clear that the only reason Harm isn't dead is because Patano never intended to kill him.
- Dark and Troubled Past: Plenty to go around in this episode from multiple characters, including Harm.
- Designated Girl Fight: Austin vs Angelique after Angelique drugged Harm and tried to murder him.
- Fire-Forged Friends: Colonel Patano and Ambassador Sonsiri are old war buddies, and the Colonel will do quite a bit for his friend and for his friend's wife, Angelique, who he is in love with.
- Flash Back: Harm gets one fleshing out a bit of his Back Story, where he went on foot into Vietnam trying to find his father, who went MIA. He met a girl his age who ended up being shot dead while he watched, unable to help.
- Freudian Excuse: Angelique's reason for the killings. Her father was a Navy Lieutenant who left her and her mother behind when Saigon fell. The North Vietnamese raped and murdered her mother when they found out she had an American officer for a lover.
- Genre Blind: Discussed. Harm is blindsided due to his own emotional baggage.Harm: There's a lot of things you're blind to. But you don't realize it until it's too late.
- Jurisdiction Friction: Made worse by the fact that the civilian cop is entirely correct in his interpretation of the jurisdiction. Meg decides to use her human approach to persuade the cop to help, but the cop sees right through it, telling her not to waste his time before giving her a copy of his notes anyways on the case to help the Navy's investigation.
- Pocket Protector: Colonel Patano's life is saved by a metal plate in his chest that stops a bullet. The plate itself was the result of an old war wound.
- Serial Killer: Harm and Meg suspect the murders of multiple Navy Lieutenants in Arlington Cemetery are related. A local cop points out it could just be statistics: Washington D.C. has both an unusually high murder rate and an unusually high Navy Lieutenant rate compared to other cities. Obviously, it's a serial killer.
- Shell-Shocked Veteran: The only witness to the latest murder is a retired Navy SEAL who works as a groundskeeper at Arlington National Cemetery, and who spends much of his time drinking.
- Suicide by Cop: Attempted by Patano, who opens up a gunfight with Harm with the intent of letting Harm win in order to cover up for the killer.
- Stock Footage: Bill Clinton playing saxophone during the embassy dinner.
- Tampering with Food and Drink: The murder victims are drugged before they are murdered, so they can't put up a fight. Harm avoids drinking the champagne when he thinks he's Alone with the Psycho. But he did eat the chocolate she gave him.
- Revealing Cover Up: Colonel Patano bribes a witness into telling the cops that he didn't see anything. Which is entirely true he really didn't see anything. He does decide to tell Harm about the bribe.
- You Look Like You've Seen a Ghost: Non-literal example. Angelique reminds Harm of a girl he watched die when he was sixteen. She lampshades this trope, before presenting the alternate possibility that Harm stares at all women like that.
As you were...