‘NCIS’ Season 23 is here: Did you miss the TV premiere of the show? Here’s how you can watch it online; check primary cast and what to expect

‘NCIS’ has returned to the TV screens with its 23rd season, with fans anticipating a saga of love and revenge. The new season has a lot in store for all the fans, as the season is set to return with an arch nemesis. This season will also introduce Parker’s sister, Navy Vice Admiral Harriet Parker (Nancy Travis), who will reignite the unhealed wounds from Parker's past.

‘NCIS’ season 23: When and where to watch

"NCIS" Season 23 premiered on Tuesday, October 14, 2025, at 8 p.m. ET / 5 p.m. ET. The American military police procedural television series will air on CBS. It will also be available on the CBS website or the CBS app. It is pertinent to mention that all those who wish to watch the show will need a cable provider login to access the new episodes.

‘NCIS’ season 23: How to stream online if you miss the premiere

New episodes will be available for streaming the next day on Paramount+, but subscribers of Paramount+ with Showtime can stream live on demand.

'NCIS' Season 23: Primary cast

According to Paramount, the primary cast of "NCIS" Season 23 includes:

• Gary Cole as Supervisory Special Agent Alden Parker
• Sean Murray as NCIS Senior Special Agent Timothy McGee
• Wilmer Valderrama as Special Agent Nick Torres
• Katrina Law as Special Agent Jessica Knight
• Brian Dietzen as Chief Medical Examiner Dr. Jimmy Palmer
• Diona Reasonover as Chief Forensic Scientist Kasie Hines
• Rocky Carroll as NCIS Director Leon Vance

How did ‘NCIS’ season 22 end?

As season 22 concluded, the team was left reeling from the murder of Agent Alden Parker's (Gary Cole) father and the romantic fallout between Agent Jessica Knight (Katrina Law) and Dr. Jimmy Palmer (Brian Dietzen).