Rule #1: Never let suspects sit together. (Yankee White: episode 1)
Rule #1: Never screw over your partner. (Blowback: episode 84)
Rule #2: Always wear gloves at a crime scene. (Yankee White: episode 1)
Rule #3: Never believe what you are told. (Yankee White: episode 1)
Rule #3: Never be unreachable. (Deception: episode 58)
Rule #4: Best way to keep a secret is to keep it to yourself. Second best way is to tell one other person if you must. There is no third best. (Blowback: episode 84)
Rule #6: Never say you’re sorry. (Flesh and Blood: episode 150)
Rule #7: Always be specific when you lie. (Reveille: episode 23)
Rule #8: Never take anything for granted. (Probie: episode 56)
Rule #9: Never go anywhere without a knife. (One Shot, One Kill: episode 13; Missing: episode 20; Probie: episode 56)
Rule #10: Never get involved personally on a case. (Obsession: episode 159)
Rule #11: Walk away when the job’s done. (Semper Fidelis: episode 137)
Rule #12: Never date a co-worker. (Enigma: episode 15)
Rule #13: Never involve lawyers. (Collateral Damage: episode 119)
Rule #15: Always work as a team. (Leap of Faith: episode 99)
Rule #18: It's better to seek forgiveness than ask permission. (Silver War: episode 51)
Rule #22: Never, ever bother Gibbs in Interrogation. (Smoked: episode 80)
Rule #23: Never mess with a Marine's coffee if you want to live. (Forced Entry: episode 33)
Rule #27: There are two ways to follow someone. First way, they never notice you. Second way, they only notice you. (Jack Knife: episode 153)
Rule #38: Your case, your lead. (Bounce: episode 129)
Rule #39: There is no such thing as coincidence. (Obsession: episode 159)
Rule #40: If it seems like someone is out to get you, they are. (Borderland: episode 160)

Proszę ttp://www.mikeweatherly.com/2009/07/gibbs-rules-50-rules-but-only-these-have-bee n-revealed.html

Dzięki :)