Created by Dick Wolf and Craig Turk, FBI is the ongoing police procedural scripted drama series following the agents and cases of the Federal Bureau of Investigation's New York City Field Office. The ensemble series will be returning to CBS in the fall of 2026. So, what should you remember from the Season 8 finale before FBI Season 9 debuts on CBS?

What is FBI?

Originally planned as a Law & Order: SVU spinoff for NBC, the FBI series eventually landed with CBS, becoming producer Dick Wolf's first non-NBC show in 15 years. (That said, the series has featured an appearance from a character from Wolf's NBC series Chicago P.D., suggesting they share a fictional universe, if not a network.) As the name suggests, the series centers around agents and cases in the New York City FBI field office. 

FBI features a cast full of interesting characters, including Missy Peregrym as Special Agent (SA) Maggie Bell, Zeeko Zaki as SA Omar Adom "OA" Zidan, Jeremy Sisto as Special Agent in Charge (SAC) Jubal Valentine, Alana de la Garza as Special Agent in Charge (SAC) Isobel Castille, John Boyd as SA Stuart Scola and Juliana Aidén Martinez as SA Eva Ramos.

What happened in the FBI Season 8 finale?

Fans can expect some major developments on the show after the FBI Season 8 finale, which saw the team hustling to secure a stolen bioweapon. In the final moments of the episode, OA was fired from the FBI team. However, fans of the character needn't worry: OA will be returning as a regular character in FBI Season 9. But, he may "be a bad guy for a little while," according to an interview Zaki gave to People Magazine.

FBI Season 9 will debut on CBS on Monday, October 5th, 2026 at 8:00 PM ET/PT, with episodes available to stream the next day on Paramount+.

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