The long-running CBS procedural is wrapping up its current season over the next few weeks, and one might say that season 19 has been the most pivotal one yet.
NCIS surprised fans back in the fall when it said farewell to Mark Harmon's lead character, Leroy Jethro Gibbs. Though there have been mentions of Gibbs throughout NCIS season 19
it might be better to go into the episode ready to be surprised by anything. Whether he's there or not, Gibbs will have a hand in the NCIS finale, which airs on May 23.