‘NCIS’ Season 23: Premiere Date, Cast, Trailer, Spoilers & How to Watch
With its renewal for a 23rd season, NCIS continues to hold its title as CBS’ longest-running scripted series — and one of the longest-running dramas on television. Over its 20-plus years on air, the show has seen many changes, but Sean Murray, who first appeared as a guest star in Season 1, now stands as the longest-running cast member.
Here’s everything you need to know about NCIS Season 23.
🗓️ When does ‘NCIS’ Season 23 premiere?
The new season of NCIS premieres Tuesday, October 14, 2025, kicking off a brand-new night fully dedicated to the NCIS universe on CBS.
⏰ What time does it air?
New episodes air at 8 p.m. ET/PT on CBS, with streaming available the next day on Paramount+.
🎬 Is there a trailer for Season 23?
Yes — the explosive new trailer shows Agent Alden Parker (Gary Cole) on a mission for revenge after his father’s murder, with his team backing him through every dangerous turn.
👥 ‘NCIS’ Season 23 Cast
The main cast returns for Season 23:
- Gary Cole as Supervisory Special Agent Alden Parker
- Sean Murray as Senior Special Agent Timothy McGee
- Wilmer Valderrama as Special Agent Nicholas “Nick” Torres
- Katrina Law as Special Agent Jessica Knight
- Brian Dietzen as Dr. Jimmy Palmer
- Diona Reasonover as Forensic Scientist Kasie Hines
- Rocky Carroll as NCIS Director Leon Vance
⚠️ ‘NCIS’ Season 23 Spoilers
Season 23 picks up immediately after the tragic events of the Season 22 finale. Parker goes to extreme lengths to avenge his father’s death, targeting the woman he believes is responsible — mob boss Carla Marino (Rebecca De Mornay). His pursuit puts both his career and the team’s safety at risk.
Adding even more tension, Nancy Travis guest stars as Navy Vice Admiral Harriet Parker, Alden’s sister, whose arrival forces Parker to face painful memories from his past.
🔠 What does ‘NCIS’ stand for?
Originally titled Navy NCIS: Naval Criminal Investigative Service, the name was later simplified to NCIS once the acronym became widely recognized.
🌍 ‘NCIS’ Spinoffs
The NCIS franchise continues to expand, including:
- NCIS: Los Angeles
- NCIS: New Orleans
- NCIS: Origins (a prequel)
- NCIS: Tony & Ziva (new streaming series)
📺 Where to Watch ‘NCIS’
- New episodes: Tuesdays on CBS
- Streaming: Next day on Paramount+
- Older seasons:
- Seasons 1–17 on Netflix
- Seasons 1–11 on Hulu
- All seasons available on Paramount+
Season 23 promises intense drama, emotional moments, and the kind of high-stakes investigations fans have loved for over two decades — and this time, vengeance is personal.
