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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When do you ever remember Gibbs sitting out on an investigation. He must be seriously worried about Fornell.
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Gibbs sits out of an investigation in order to help Fornell on NCIS. "Cabin Fever" is the 15th episode of the show's 12th season.
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Unfortunately there's more than babies to think about. The team still has a murder to solve in "We Build, We Fight"
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The team investigates the murder of an openly gay Navy Lieutenant who was set to be awarded the medal of honor on NCIS. "We Buid, We Fight" is the 13th episode of the show's 12th season.
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The team must track down a home grown terrorist on NCIS. "The Enemy Within" is the 12th episode of the show's 12th season.
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McGee reflects on Gibbs' infamous rules as he writes a letter to his father on NCIS. "House Rules" is the tenth episode of the show's 12th season.
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Who has Gibbs brought along and can she help this Navy Corpsman from paying a price for saving lives?
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NCIS Quotes

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.

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.