WARNING: This article may contain spoilers for NCIS season 17 episode 20. Read at your own risk.

NCIS season 17 episode 20 is set to arrive within a few weeks, with the title "The Arizona." It has been previously reported that the series halted its production due to the health crisis happening around the world right now. Hence, this episode may likely serve as the season finale now.

A lot of CBS shows shut down their production because of the threat brought by the COVID-19. For NCIS, the series wasn't able to finish filming the current season, and CarterMatt noted that NCIS season 17 episode 20 may likely serve as the season finale.

There's a chance that this episode could be the finale, but nothing is confirmed at the moment. The series likely wants to make this episode the finale, rather than bringing more episodes down the road. As for the remaining episodes this season, they may probably be included in the potential next installment.

Meanwhile, it's worth noting that there is no new episode airing next week. According to The Futon Critic, NCIS season 17 episode 20 will be arriving on Tuesday night, Apr. 12, on CBS. The network hasn't released the synopsis, but this episode features the appearance of Christopher Lloyd.

The Back to the Future star is set to appear as a guest star in NCIS season 17 episode 20, where he'll be playing the role of Joe Smith, a 95-year-old former Navy sailor. The character description also noted that he "served on the USS Arizona when it was attacked at Pearl Harbor in 1941."

As per TVLine, Smith wanted to have his ashes laid to rest with his fellow sailors when he dies. However, this person becomes the unexpected focus of the investigation. Gibbs and the rest of the team aren't really sure whether they could really trust Smith since his story is odd to them.

No further details were revealed about Lloyd's character, aside from he wanted to put his ashes alongside his fellow sailors. Perhaps, the reason why he is determined to make it happen is because this would define a good percentage of his life.

Meanwhile, Lloyd played the role of Dr. Emmett "Doc" Brown in Back to the Future franchise. The actor also starred in the comedy series Taxi, where he portrayed Rev. Jim Ignatowski. Syfy's 12 Monkeys, ABC's Roseanne revival, and NBC's A.P. Bio are his most recent TV appearances.