NCIS season 18 is officially happening on CBS, but fans may need to wait for a little while as the release schedule of the Mark Harmon-led series is still uncertain right now. Some were hoping it would air this fall, but everything all depends on the current situation.

But although there's a potential delay, a lot of stories are worth-exploring in NCIS season 18. For instance, the latest installment may address the Gibbs and Tobias Fornell's storyline. In season 16 finale, the episode saw Gibbs helping his longtime friend.

The daughter of Fornell has gotten herself into the world of opioids, and because of this, they found out that a chain possibly leads to some dangerous people. This storyline, however, wasn't explored in season 17. It was referenced shortly but wasn't entirely addressed due to Ziva Davis' return.

The door is still open for this storyline, so this is an opportunity for NCIS season 18 to further dive into different scenarios. Fornell might be back, while Gibbs and the team look into the dangerous drug trade. It may not necessarily be part of the premiere, but it would be nice seeing this story being explored.

What's unique about the series is that it doesn't immediately tie some loose ends, leaving them hanging for a while, and then circle back to them. Just like with Ziva's storyline, so the series could do something similar within this story.

As for what else is coming, NCIS season 18 will further explore the characters' storylines, such as Jack Sloane. She is one of the most interesting characters within this world and her story could flesh out in different ways. She's been through a lot even before joining the team.

Sloane has shared some of her stories, but it seems like there are some buried secrets from her past. Her backstory has been shown, which proved to be devastating. In the new season, the series may focus on other parts of her past and the people associated with her outside her job.

In addition, Sloane and Gibb's relationship is one of the most interesting parts of the series and is worth exploring as well. Their bond is becoming deeper and their chemistry increases. In season 16, the two know some things about one another that nobody else knows.

In NCIS season 18, Sloane and Gibbs may take their relationship to the next level. Gibbs, in particular, may have finally decided to let someone in and Sloane could be the one. After all, there have been hints that she has some feelings for him.