NCIS vyšetřuje vraždy mužů ze základny letectva. Všechny oběti vykazují znaky vražd sériového vraha. Oběť zastaví u silnice, aby někomu pomohla, následně je zastřelena, svlečena a spoutána. Na stopě těchto vražd NCIS spolupracuje s místní šerifkou, ta však věnuje mnohem větší pozornost Gibbsovi než případu. Postupně se zjistí, že vraždit by mohla manželka jedné z obětí. Ostatní vraždy mohla spáchat proto, aby od sebe odpoutala pozornost. NCIS však naráží na problém. Žena má skálopevné alibi, které vyvracejí nález DNA na místě jednoho z činů. Její alibi však padnou ve chvíli, kdy agenti zjistí, že žena má sestru dvojče.

In the squad room Kate is dealing with her emergency contact information. Tony volunteers and against her better judgment, Kate accepts. Tony immediately makes it a big deal and Kate changes her mind to Abby. Abby is walking through reading her horoscope and is grateful that she is not a Libra. Gibbs comes through carrying two cups of coffee. The phone rings and they're off to the crime scene.

They arrive on the scene and met the local sheriff, Charley, who is reluctant to turn over the investigation to them. Charley, who insists several times that Gibbs call her that, drives a hard bargain before conceding that they can do the forensics work. The investigation is hers and all prosecution will be in her county. It's an election year.

The crime scene is markedly different from what we saw in the opening. It now looks like the dentist had the flat tire and was changing it when he was attacked. Ducky tells Charley the biblical tale of the good Samaritan. Ducky flirts, but Charley shoots him down. Charley is much more interested in Gibbs and is quite direct about it. Charley even manages to get Gibbs after hours number, just in case she needs to get a hold of him.

Back in the autopsy suite, Ducky has determined that the bullet was most likely a hollow point. Gerald comes in and Ducky explains how the dum-dum bullet got its name. Gerald says that he actually finds that interesting. Ducky responds as opposed to what?

Gibbs interviewed his CO, a woman, while Tony and Kate search his apartment. The CO says that the major spent most of his off time doing collectibles on the internet. Tony stumbles across the dentist's ebay login "igottoomany" and the dentist definitely has too many. The dentist collected lunchboxes and has a whole room full.

They're all back at the squadroom and Sheriff Charley has been trying to contact Gibbs. The sheriff wants to video conference and tell Gibbs about the similar homicide two counties over. The team starts checking the new victim, a civilian who worked at the same base as the dentist, for ties to the first one, and the dentist's CO. They also are to get the records from the local LEOs for this murder.

Back in Ducky's autopsy suite, Ducky has determined that the cause of death is pretty straight forward. The gunshot residue indicates that the dentist was shot at a close range. Ducky also found a powder on the victim's wrists, most likely corn starch. Ducky starts to tell Gibbs about the use of corn starch in latex gloves, but Gibbs cuts him off. Without missing a beat, Ducky continues his story with Gerald as his new audience.

Abby is in the garage, working on the supposed flat tire from the victim's car. She and Gibbs try to out bluff each other as to whether or not they know what the other is thinking. It ends in a draw with the conclusion that they should play poker together sometime. Abby has discovered that the flat tire was not really flat, the air was let out. Gibbs inquires after the tire tracks lifted at the crime scene and Abby replies in a manner which makes Gibbs note that she is particularly feisty today. After looking at the tire track evidence, they move on to fingerprints. Abby found fingerprints on the hood. Gibbs asks if she ran it through AFIS, as Abby says AFIS. Gibbs remarks feisty and psychic to which Abby replies it's a killer combination. Abby also found corn starch on the lock of the trunk, but Gibbs all ready knew that. Abby stops and then says "Ducky." They have determined that this was not a crime of opportunity, but a very well planned out murder.

Back in the squad room, Kate is having trouble with the phone tree of the county clerk's office. She cannot seem to get a real person on the phone to request the records of that crime. And that's when Charley walks in. She is in civilian clothes with her hair loose. She's bringing gifts, the evidence from the other crime scene, but she will only give it to Gibbs. Once it's delivered, she informs Gibbs he owes her dinner. Gibbs inquires as to whether or not Charley has always been this shy. She responds that there are two kinds of people, the ones that go after what they want, and everybody else. Gibbs takes her to the cafeteria for dinner.

When Gibbs returns, Kate and Tony are standing looking at the plasma screen, with knowing smiles on their faces. Gibbs ask if they have something to say, they reply no in unison and turn back to their work. The crime scene appears to be almost identical to theirs. But one of the local LEOs noticed a wet patch of grass and bagged it. The local LEOs were still waiting for DNA identification on the urine. Gibbs tells them to get the sample to their lab where they will rush it.
Cut to a shot of a car on the side of the road with its blinkers on, followed by a dumped, naked body. The last shot is of a car with its blinkers on, but these are red blinkers, not white as in the previous shot.

As they arrive at the crime scene, Tony goes on and on about the car, an X4. This car does not have a flat tire like the previous victims' cars did. Charley is on the scene, waiting for Gibbs. Kate says it looks like the work of the same person, but Ducky disagrees. This body was killed elsewhere between 2 and 3 in the afternoon and then dumped here. They think this is the work of a copycat killer.

Gibbs thinks they are looking for a woman. Charley says "what's your thinking, doll?" Gibbs says that men prefer hands on killing, women don't. Women leave crime scenes meticulously clean. What would cause a man to pull over at night? A damsel in distress. Charley says "handsome AND smart." Gibbs assigns Kate and Tony to go over all the records on base, looking for a disgruntled employee. Gibbs says he is going to go and interview the latest victim's REO. Kate wants to know if there is any rhyme or reason in how Gibbs makes assignments. Gibbs answers "yea" and then walks away with Charley, both of them laughing.

The latest victim's REO says they should be looking at his wife, soon to be ex-wife. The divorce was very nasty and Jimmy came from a wealthy family.

Gibbs and Kate interview the widow, Laura Seeger. She says she is very upset at her husband's death despite the rancor of their divorce. She tells them that she knows she is at the top of their list of suspects and to just ask her the questions they came to ask. Gibbs asks if she killed her husband. She says no. She provides an alibi and also agrees to provide a DNA sample.

Ducky finds that the two autopsies were nearly identical. "It was deja vu all over again" which leads to a discussion between Tony and Kate on the difference between Yogi Bear and Yogi Berra. Ducky says he found something in the victim's nose and he took a swab to it. Gibbs comments that's kind of old school, isn't it and Ducky says he goes where the evidence takes him. Then Ducky starts to tell a story about a corpse with jelly from a doughnut on his face. Sadly, we'll never hear the end because Gibbs interrupts to ask about the swab.

The victim had sawdust in his nose. Laura Seeger said that her husband had a woodshop at the back of their property. There was also a dog hair in the nostril. Laura has dogs. Laura also seems to have a solid alibi, but they'll check into that.

Abby is in her lab listening to something on headphones when Gibbs sneaks up on her. Abby does not appreciate it. But she has something for him, something that will rock Gibbs' world. Abby has matched the bullet from the first victim to the third victim, which means there was not a copycat killer. All three were killed by the same person. The new speculation is that Laura Seeger killed two strangers to cover up killing her husband, making it look like a serial killer.

Gibbs wants a report on the DNA match. Abby tells him he cannot rush science. There won't be a match for at least 18 hours.

Charley shows up in the squad room with the video tapes from the bank to verify Laura Seeger's alibi. She hasn't looked at them because she can't watch movies alone. She also picked up a copy of Sleepless in Seattle, just in case. Gibbs is finding Charley's pursuit of him amusing. Laura Seeger is on the bank's video tape just like she said she would be. Her alibi has been confirmed. Gibbs wonders if the bank uses a central system for their security tapes. Laura could have had an accomplice change the time. "How hard is it for an attractive woman to get a guy to do what she wants?" Both Charley and Kate answer that it's easy. Tony tells them it was a rhetorical question.

Gibbs hands out assignments, including one for Charley, although she tells him it will cost him. Gibbs keeps the tapes so that Abby can go over them and make sure the shadows are consistent with the time of day.

Back at Laura Seegers', she doesn't appear surprised to see Gibbs at her door. She also doesn't seem to be surprised by anything he says, including that they found sawdust and dog hair in her late husband's nose. Laura insists that she has nothing to hide and doesn't understand what Gibbs wants from her.

Kate and Tony discover that the Seeger's pre-nup means that Laura would have gotten nothing in the divorce. If Seeger died before they were divorced, she would inherit all that money. In the conversation we discover that Tony thinks ABBA are Swiss not Swedish, and denies the truth (but at least he likes them). Gibbs returns and it is clear from his demeanor that the interview with Laura did not go as he had hoped.

Abby has called Gibbs and is ready to rock his world again. Laura Seeger's DNA matches the DNA from the urine sample at the second crime scene. They cannot match because Laura has an iron-clad alibi. But they do.

Gibbs and team plus Charley show up at Laura Seeger's with a search warrant. Laura has an alibi for her husband's murder, but not for victim number two, the crime scene with the urine. Laura insists that someone is setting her up, that someone must have stolen her urine and planted it at the crime scene. Laura gave two urine samples within the last month and her doctor is the woman who was the first victim's CO, Commander Green. Turns out she had a problem with Seeger; he filed a sexual harassment complaint against her. The matter had not gotten to the review board yet; Seeger was killed before it did. Commander Green asks Gibbs if he's trying to insuinate something; Gibbs responds he doesn't insinuate. Gibbs wants the medical records from Laura Seeger's physical; Commander Green declines. They discuss whether or not these medical records are military records and Commander Green says she'll have to check Gibbs' interpretation, which will take a while. Gibbs asks for her alibi; she was at a medical conference in D.C.

Back in the squad room they are discussing the fact that both of their prime suspects have iron-clad alibis. That the DNA at the crime scene was from one of their prime suspect and also in the possession of their other prime suspect. Tony is in favor of it being the Commander because that whole sexual harassment thing is just wrong. Kate gets a phone call from Arlene in Records which answers the question.

Cut to nighttime with the team moving in a vehicle talking to the OnStar operator. They have a location on the vehicle they are tracking. Charley rogers that she has that location. Tony chimes in that they've made their pickup and hopes they get there before someone else does.

There is the rear of a vehicle with the same white lights blinking that we've seen before. A man's feet are walking up to the vehicle. It's Gibbs, flashlight in hand. He commands the person in the vehicle to put her hands where he can see them and opens the car door. Laura Seeger emerges from the vehicle. Laura is handcuffed as more police cars arrive. Laura is taken to the rear of one of the police vehicles only to see her identical twin sister in the back seat of the car.

Back in the squad room, Tony is fixated on the twins thing. As they are talking Charley comes on the TV for a press conference about the arrest. Charley starts out saying there is a group of people she would like to thank and Tony is certain they are about to get the credit they deserve. Charley calls them unsung heroes and Kate responds not once you start singing. Charley, however, is talking about the citizens of Graysen County. Kate and Tony are surprised; Gibbs is just amused. As he says, "It's an election year."