Ep 5. Head of the Snake

The season 18 of NCIS is a crime drama that follows a team of Naval criminal investigators trying to solve murders and other crimes that involve the US Navy and Marine Corps. The show stars Mark Harmon as Leroy Jethro Gibbs, a former Marine Corps Scout sniper who is now leading the NCIS team.

Episode 5 of season 18 of NCIS is named Head of the Snake. In this episode, the NCIS team is going after a terrorist group known as "The First-to-Go" (FTG). Their investigation leads them to a businessman named Amir Kahlil who has connections with the FTG.

The team first meets Kahlil when they intercept him at an airport, but Kahlil insists that he's not involved with the FTG and asks for a lawyer. He is then released, but not before informing the team that they have made a grave mistake, and the FTG is much more dangerous than they think.

The team soon discovers that Kahlil has been lying to them, and he is indeed working with the FTG. Kahlil is the "Head of the Snake," who coordinates the FTG's operations from behind the scenes. The team then sets out to find Kahlil and eliminate him, hoping that it will lead them to the rest of the FTG's members.

Meanwhile, McGee's wife, Delilah, is trying to convince him to take a position with a private security firm that's offering him a lot of money. But McGee is hesitant, as he's not sure if he wants to leave NCIS.

As the team investigates Kahlil, they discover that the FTG has planned a major attack on a US Navy ship. The team then races against time to prevent the attack and capture the remaining members of the FTG.

The story also explores the personal relationships of the NCIS team members, with Bishop and Torres being caught in a complicated situation that they try to resolve.

The "Head of the Snake" episode of NCIS season 18 is a typical episode of the show, with the team trying to save lives and stop a terrorist group from attacking the US Navy. The episode also offers a glimpse into the personal lives of the team members, adding a human touch to the show. Overall, the episode provides a thrilling and action-packed ride, with a satisfying conclusion that will leave fans of the show both entertained and satisfied.