NCIS star Brian Dietzen has promised huge twists in the season 21 finale.
The show is fresh off celebrating the 1,000th episode of the NCIS franchise this week, which included a crossover event with NCIS: Hawai'i and NCIS: Los Angeles.
Now, the focus turns towards the upcoming season finale 'Reef Madness' on May 6, capping off a shortened 10-episode season due to the acting and writing strike last year.
Speaking to Entertainment Weekly, Brian — who plays chief medical examiner Dr. Jimmy Palmer — has promised the final episode will leave fans breathless.
"As per usual with NCIS, it's gonna leave a lot of people with their mouths wide open after the credits start to roll,” Dietzen promised. “I think everyone's pretty damn proud of what we put together.”
![ncis 1000 gary cole as alden parker, wilmer valderrama as nicholas nick torres, brian dietzen as jimmy palmer, katrina law as jessica knight, and sean murray as timothy mcgee](https://hips.hearstapps.com/hmg-prod/images/ncis-1000-cast-661ed70df1fa6.jpg?resize=980:* "NCIS 1000 Gary Cole as Alden Parker, Wilmer Valderrama as Nicholas "Nick" Torres, Brian Dietzen as Jimmy Palmer, Katrina Law as Jessica Knight, and Sean Murray as Timothy McGee")
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The actor also assured fans that there are still some huge moments to come ahead of the finale, even with a shortened season.
"There's plenty in store there," he said. "It's only a 10-episode season, right? It just kind of feels like each of our writers kind of only gets one at-bat, and they're really swinging for the fences, and they are not disappointing.
"One that's coming up pretty soon here highlights Gary Cole's character Parker in a way that, to me, is some of the funniest stuff I've seen in a long, long time on the show, just situationally funny. Having read it, I can't wait to see what Gary does with the material."
Fans can expect more NCIS on the way, as the show was recently renewed for a 22nd season to air this autumn.
![ncis season 21 brian dietzen as jimmy palmer, gary cole as alden parker, katrina law as jessica knight, and wilmer valderrama as nick torres](https://hips.hearstapps.com/hmg-prod/images/ncis-cast-661ed7a18e5b0.jpg?resize=980:* "NCIS season 21 Brian Dietzen as Jimmy Palmer, Gary Cole as Alden Parker, Katrina Law as Jessica Knight, and Wilmer Valderrama as Nicholas "Nick" Torres")
Related: NCIS star Wilmer Valderrama reveals cast secret
There are two new spin-offs in the works as well: a prequel about Leroy Gibbs that will be narrated by Mark Harmon and a contemporary show reuniting Ziva David and Tony DiNozzo.
NCIS airs on CBS in the US. Seasons 1-20 are available on Disney+ in the UK, and season 21 is currently streaming on the platform.
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