NCIS
Mondays 9:00 PM on CBSFavorite Leroy Jethro Gibbs Quotes
Never screw over your partner. (Season 4, Episode 14, Gibbs)
Rule #1
Never be unreachable. (Season 3, Episode 13, Gibbs)
Rule #3
The best way to keep a secret? Keep it to yourself. Second best? Tell one other person, if you must. There is no third best. (Season 4, Episode 11)
Rule #4
You don't waste good. (Season 8, Episode 22)
Rule #5
Never apologize. (Season 7, Episode 12, but referenced previous times without a number attached)
Rule #6
Always be specific when you lie. (Season 1, Episode 23)
Rule #7
Never take anything for granted. (Season 3, Episode 10)
Rule #8
Never assume. (Season 9, Episode 21)
Rule #8
Never go anywhere without a knife. (Season 1, Episode 13)
Rule #9
Never get personally involved on a case. (Season 7, Episode 21)
Rule #10
When the job is done, walk away. (Season 6, Episode 24)
Rule #11
Never date a coworker. (Season 1, Episode 15, and referenced on other occasions)
Rule #12