Zoe meets Tony DiNozzo Sr on NCIS. "No Good Deed" is the 20th episode of the show's 12th season.
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A murder investigation gives the team a lead on a 40-year-old cold case on NCIS. "Patience" is the 19th episode of the show's 12th season.
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McGee and Delilah are reunited during an investigation on NCIS. "Status Update" is the 18th episode of the show's 12th season.
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DiNozzo Sr returns to help on a case on NCIS. "The Artful Dodger" is the 17th episode of the show's 12th season.
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Gibbs finds that a murder victim has been using an old alias from a 20-year-old undercover operation on NCIS. "Blast from the Past" is the 16th episode of the show's 12th season.
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If anyone should understand dealing with grief, it has to be Gibbs and Director Vance who have both lost loved ones.
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When Gibbs learns who is the target of the latest investigation, will he come running back or let his team handle it?
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Tony and the entire team will have to step up their game when Gibbs' arch-nemesis is behind an explosion at a summit for global terror event.
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NCIS Quotes

McGee: All right. Well you should probably know that Abby and I used to date?
Bishop: Ew. Like, each other?
McGee: Yeah.
Bishop: Wait - isn't that a violation of rule 12, never date a....
McGee: It was a long time ago. After we'd broken up, one night I went to her lab. Found a scribbled piece paper; a list. Potential boyfriends had to fulfill certain conditions by a pre-arranged date or else, goodbye.
Bishop: Such as.
McGee: Things started off relatively normal: opening the door for her, flowers, putting the seat down. Then around number 8, it gets uh...
Bishop: What?
McGee: Does she know you have these?
Bishop: Does she know you have these?
McGee: Yeah she wasn't happy when she found out.
Bishop: These are all very specific.
McGee: Yeah.
Bishop: These ideas apply to you?
McGee: No those rules weren't in place when we were together. At least I don't think so.
Bishop: What's with the two month cutoff? Abby's sabotaging herself. I've seen stuff like this before. We have to talk to her.

McGee: Rule number 70 - keep digging till you hit bottom.
Abby: McGee! There is no rule 70.
McGee: Well, I--
Abby: You just made up a rule. This McGibbs thing has really gone to your head. I don't even recognize you right now.