Home TV Shows FBI Season 9 Episode 6 Preview: Radioactive Threat Escalates in “Ultimatum”

FBI Season 9 Episode 6 Preview: Radioactive Threat Escalates in “Ultimatum”

November 4, 2026

The team’s on high alert to stop a mass casualty event on CBS’s FBI season nine, episode six. Directed by Nimisha Mukerji, episode six – “Ultimatum” – will air on Monday, November 9, 2026 at 8pm ET/PT.

“Ultimatum” Plot: A highly radioactive material is stolen from a medical disposal facility, sending the team to track down the thief. Meanwhile, after Eva goes to check on her mom, she finds herself in the middle of a fragile situation on the Staten Island Ferry.

Missy Peregrym stars as Special Agent Maggie Bell, Zeeko Zaki plays Special Agent Omar Adom “OA” Zidan, Jeremy Sisto is Assistant Special Agent in Charge Jubal Valentine, Alana De La Garza is Special Agent in Charge Isobel Castille, John Boyd plays Special Agent Stuart Scola, and Juliana Aidén Martinez is Special Agent Eva Ramos.

FBI Season 9 Episode 6 — Missy Peregrym as Special Agent Maggie Bell, Zeeko Zaki as Special Agent Omar Adom ‘OA’ Zidan, and John Boyd as Special Agent Stuart Scola in FBI season 9 episode 6 (Photo: Bennett Raglin © 2026 CBS Broadcasting, Inc)

FBI Description, Courtesy of CBS:

“FBI is a fast-paced drama about the inner workings of the New York office of the Federal Bureau of Investigation. This elite unit brings to bear all their talents, intellect, and technical expertise on major cases in order to keep New York and the country safe. Born into a multigenerational law enforcement family, Special Agent Maggie Bell commits deeply to the people she works with as well as those she protects.

Her partner is Special Agent Omar Adom ‘OA’ Zidan, a West Point graduate via Astoria who spent two years undercover for the DEA before being cherry-picked by the FBI. Also on the team are Special Agent Stuart Scola, an Ivy League-educated Wall Streeter-turned-FBI agent; and Special Agent Eva Ramos, a former prosecutor with a background tackling violent crime and narcotics cases.

Overseeing them are Special Agent in Charge Isobel Castille, who operates under intense pressure and has undeniable command authority; as well as Assistant Special Agent in Charge Jubal Valentine, the nerve center of the office, whose ability to easily relate to and engage with both superiors and subordinates makes him a master motivator. These first-class agents tenaciously investigate cases of tremendous magnitude, including terrorism, organized crime, and counterintelligence.”