NCIS partners with the Coast Guard Investigative Service (CGIS) to investigate a suspicious explosion on board an oil rig. Meanwhile, no one is safe from a mysterious prankster who is targeting the NCIS team.
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.
Keates: Spider? Tony: Keates? Gibbs: You know her? Tony: Um, well I..in a sort of...yeah. She's Philly PD. Keates: She was. She's ATF now. Special Agent Zoe Keates. You want to get that gun out of my face and come over here and give me a hug?