When his younger sister shows up at his apartment in the middle of the night, believing that she might have killed someone, McGee takes matters into his own hands and risks his NCIS career as he attempts to find out what happened while the rest of the team investigate the death of a Navy sailor and as it turns out, the victim is connected to McGee's sister...
The next morning, in the NCIS elevator, everyone leaves to begin another day of work except for McGee who remains in the elevator with DiNozzo waving at him.
As Ziva arrives, DiNozzo remarks that he thought that being sent to the principal's office was bad.
"He's still in the elevator?", Ziva says.
"Per Gibbs's orders, awaiting El Jefe's arrival", DiNozzo replies, causing Ziva to whistle and wonder just how mad Gibbs is.
"Well, considering McGee's been covering for his sister who's implicated in the death of a Navy sailor..", DiNozzo begins, only to stop as the elevator opens with another worker leaving while Gibbs comes in, hitting the button while asking McGee what he was thinking.
"I say he's handling it pretty well", DiNozzo finishes.
- Sarah McGee returns, asking for her brother's help as she believes that she might have killed someone.
- The team discover that McGee's become an author and has published a book titled Deep Six.
- McGee later resigns from NCIS but Gibbs soon talks him into changing his mind and he remains on the team.
- While working with Jenny in her lab, Abby tells her about her "date" with Marty Pearson in the prior episode, Once a Hero (episode) Marty reappears in Smoked (episode).
- Tony first saw Sarah's picture on McGee's iPod in the Season 3 Episode 16, Family Secret (episode). He was unaware of her identity but insisted that she had to be McGee's sister since she was too attractive to be his girlfriend.
- This is the episode which reveals the secret behind McGee's mysterious new wealth, hinted at in several earlier episodes of Season Four.
- Sarah is played by Troian Bellisario, daughter of series producer Donald Bellisario. Troian is the half-sister of Michael Bellisario (who played Chip Sterling in Season Three) and the stepsister of Sean Murray, who plays McGee. And despite Sarah McGee's Irish heritage, she cannot handle her alcohol.
- When Abby says that she was going over the trash, the legs of someone, presumbly a man holding a boom mike can be seen walking across her lab.
- This is the second time the team has been called to Waverly University to investigate a dead body, the first being the Season 2 episode, Red Cell (episode).
- The song playing inside the room at Waverly University when Gibbs goes to interview Seaman Jeff Petty's girlfriend, Carolyn is "Tradition" by Living in Question.
- The song playing at the begining of the episode is "Don't Explain" from the Dexter Gordon album "A Swingin' Affair".
|Leroy Jethro Gibbs||Mark Harmon||Special Agent in charge of the Major Case Response Team, NCIS|
|Anthony DiNozzo||Michael Weatherly||Senior Special Agent, MCRT, NCIS|
|Ziva David||Cote de Pablo||Mossad Liaison to the NCIS|
|Abigail Sciuto||Pauley Perrette||Chief Forensic Specialist, NCIS|
|Timothy McGee||Sean Murray||Junior Special Agent, MCRT, NCIS|
|Jennifer Shepard||Lauren Holly||Director of NCIS|
|Donald Mallard||David McCallum||Chief Medical Examiner, NCIS|
|Dr. Jeanne Benoit||Scottie Thompson||Tony's girlfriend.|
|Sarah McGee||Troian Avery Bellisario||McGee's younger sister.|
|Samuel Tate||John Cabrera||University security guard and Seaman Petty's killer.|
|Carolyn||April Matson||Co-ed, Seaman Petty's girlfriend.|
|Madison||Katherine Bailess||Co-ed, Carolyn's best friend and head of the cheerleading squad who helped Samuel Tate carry out the crime.|
|Jordan Block||Fidel Gomez||A man who appears in the episode.|
|Cheerleader 1||Kiana Jones||Uncredited role.|
|Cheerleader 2||Nicole Sienna||Uncredited role.|
|Cheerleader 3||Tiffany Tynes||Uncredited role.|
|NCIS Season Four|
|Shalom ♦ Escaped ♦ Singled Out ♦ Faking It ♦ Dead and Unburied ♦ Witch Hunt ♦ Sandblast ♦ Once a Hero ♦ Twisted Sister ♦ Smoked ♦ Driven ♦ Suspicion ♦ Sharif Returns ♦ Blowback ♦ Friends and Lovers ♦ Dead Man Walking ♦ Skeletons ♦ Iceman ♦ Grace Period ♦ Cover Story ♦ Brothers in Arms ♦ In the Dark ♦ Trojan Horse ♦ Angel of Death|