NCIS Season 23 Is Official! Brian Dietzen Teases: โ€œWe Are So Backโ€

Hereโ€™s a polished, concise rewrite of your NCIS Season 23 cast article:


NCIS Season 23: Full Cast Returns from Sean Murray to Wilmer Valderrama

After 22 years on air, NCIS is back for Season 23, and many of your favorite agents are returning to the NCIS headquarters. Over the years, the cast has seen familiar faces come and go, including Mark Harmonโ€™s Leroy Jethro Gibbs, Pauley Perretteโ€™s Abby Sciuto, and Cote de Pabloโ€™s Ziva David.

Hereโ€™s a look at which stars are confirmed for the new season:


Returning Cast Members

  • Sean Murray as Timothy McGee โ€“ An original cast member since 2003, Murray confirmed his return on social media:

โ€œNEW SEASON of #NCIS coming to you this fall :)โ€
Murray reflected on the showโ€™s longevity, noting how the series has evolved over the years while maintaining its core appeal.

  • Wilmer Valderrama as Nick Torres โ€“ Joining in Season 14 (2016), Valderrama shared excitement about returning via Instagram:

โ€œReporting live from the set of #NCISโ€ฆ ready for Season 23? ๐Ÿ‘€โ€

  • Katrina Law as Jessica Knight โ€“ A cast member since Season 18, Law is set to continue in her starring role. She posted a cast selfie celebrating the new season:

โ€œNCIS SEASON 23!!!!! Letโ€™s gooooooooo!!!!โ€

  • Gary Cole as Alden Parker โ€“ Introduced in Season 19 as Supervisory Special Agent, Parker is returning for a major storyline following the murder of his father in the Season 22 finale. Cole teased:

โ€œThereโ€™s every possibility he will go beyond protocolโ€ฆ to exact revenge. Iโ€™m not saying thatโ€™s what will happen, but heโ€™s certainly capable of it.โ€

  • Brian Dietzen as Jimmy Palmer โ€“ Joining in late Season 1, Dietzen continues as the fan-favorite medical examiner. He shared a photo of his iconic glasses with the caption:

โ€œIโ€™m putting these on my face now. Hello Jimmy Palmer. Hello NCIS. Hello Season 23. And hello Tuesday nights at 8/9c on CBS! We are so back.โ€

  • Diona Reasonover as Kasie Hines โ€“ The forensic scientist first appeared in Season 15 and became a series regular in Season 16. Sheโ€™s returning for the new season.
  • Rocky Carroll as Leon Vance โ€“ Serving as NCIS Director since Season 5, Carroll reprises his role in Season 23.

What to Expect

Season 23 promises to continue NCISโ€™ mix of procedural drama and character-driven stories. With a blend of veteran cast members and evolving storylines, fans can look forward to high-stakes cases, personal arcs, and the camaraderie that has kept the series popular for over two decades.


If you want, I can also combine this with the Tony & Ziva spinoff coverage into one comprehensive NCIS โ€œwhoโ€™s back and whatโ€™s newโ€ article for fans. Do you want me to do that?

Leave a Reply

Your email address will not be published. Required fields are marked *