Mike Smith
Here’s everything you need to know about NCIS Season 23 (2025), starring Gary Cole, Sean Murray, and Wilmer Valderrama.
NCIS Season 23 (2025) Synopsis
The hit CBS crime drama NCIS is back for its 23rd season, following Special Agent Alden Parker (Gary Cole) and his skilled team as they take on high-stakes investigations involving the U.S. Navy and Marine Corps.
After the shocking events of Season 22, Parker is left reeling from his father’s murder and becomes consumed by a personal mission to hunt down mob boss Carla Marino, forcing him to confront the line between justice and revenge. Meanwhile, the NCIS team faces a new wave of challenging cases—from blackmail and espionage to long-buried cold cases that resurface with emotional fallout.
Season 23 also explores deeper character growth: McGee steps up as a mentor for the next generation of agents, Torres struggles to overcome personal trauma, and Knight wrestles with the opportunity to join NCIS Elite, a decision that could change her career forever.
When Does NCIS Season 23 Premiere in Australia?
NCIS Season 23 premieres in Australia on Wednesday, October 15, 2025 on Paramount+.
Where to Watch NCIS Season 23 in Australia
You can watch NCIS Season 23 exclusively on Paramount+ Australia, available through the Paramount+ app, as well as the Paramount+ channel on Apple TV and Prime Video. All episodes will stream in HD and 4K, with the option to download for offline viewing.
NCIS Season 23 Episodes
Here are the episodes:
- Episode 1 – Prodigal Son (1) – Premiere date: October 14, 2025
Reeling from his father’s murder, Parker goes to extreme lengths to hunt down mob boss Carla Marino, jeopardizing both his career and the team’s safety. - Episode 2 – Prodigal Son (2) – Premiere date: October 21, 2025
Parker’s pursuit of vengeance leads to a deadly confrontation, while his sister, Vice Admiral Harriet Parker, faces an impossible moral choice. - Episode 3 – The Sound and the Fury – Premiere date: October 28, 2025
When a petty officer’s death ties to a blackmail ring, the team partners with Special Agent Sawyer. The case takes a terrifying turn for Torres as Knight faces a career-defining decision. - Episode 4 – Episode 4 – Premiere date: November 4, 2025
Plot details remain under wraps, but this episode promises another character-driven mystery involving the Navy’s elite. - Episode 5 – Unburied (2) – Premiere date: November 11, 2025
A 1990s cold case is reopened, sending the team on a chase for long-overdue justice. The episode concludes a two-part crossover with NCIS: Origins Season 2, Episode 5.
NCIS Season 23 Cast
- 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
- Nancy Travis as Vice Admiral Harriet Parker
Recurring and Guest Cast
- Joe Spano as Tobias Fornell
- Teri Polo as Vivian Kolchak
- Carolyn Hennesy as Carla Marino
- Austin Stowell as Special Agent Sawyer
Is NCIS Suitable for All Ages?
NCIS is rated TV-14, meaning it’s suitable for viewers aged 14 and above. The series contains moderate violence, occasional language, and crime-related themes, so parental discretion is advised for younger viewers.
FAQs
1. Will Mark Harmon return in NCIS Season 23?
Mark Harmon’s Leroy Jethro Gibbs remains retired from the NCIS team, but producers have hinted at the possibility of a cameo later in the season.
2. Is there a crossover with NCIS: Origins or NCIS: Sydney?
Yes, Episode 5 “Unburied (2)” connects directly to NCIS: Origins Season 2, expanding the shared NCIS universe storyline.
NCIS Season 23 Trailer
Here’s the trailer for the new season:
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