One Chicago & The FBIs Wiki
FBI (Season 4)
Network: CBS
Original run: September 21, 2021 -
Season chronology
Previous season: Season 3

FBI season 4 premiered on September 21, 2021 on 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 Bushwick who spent two years undercover for the DEA before being cherry-picked by the FBI.

Overseeing them is Special Agent in Charge, Isobel Castille, who operates under intense pressure and has undeniable command authority. The team also includes 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. Newest to the team - and the FBI - is smart and outspoken Special Agent Tiffany Wallace, who spent six years with the NYPD and is now partner to Special Agent Stuart Scola, an Ivy League educated Wall Streeter-turned-FBI agent. These first-class agents tenaciously investigate cases of tremendous magnitude, including terrorism, organized crime and counterintelligence.


Main Cast and Characters

Crossover Guest Stars

Recurring Guest Stars

Recurring Co-Stars

  • Natasha A. Murray as ERT Tech Lisa Lewis (2)
  • Sagar Kiran as ERT Tech Roman Isco (2)


Image Episode Summary Airdate
FBI0401.jpg 4.01 (#57)
All That Glitters
The team investigates when a young woman is killed on her way home from a lavish yacht party attended by some of the most influential people in the world. September 21, 2021
FBI0402.jpg 4.02 (#58)
Maggie, OA and the team must stop a hacker who is disabling life-saving equipment in several New York City hospitals, including one where Jubal's son awaits an important surgery. September 28, 2021
FBI0403.jpg 4.03 (#59)
Isobel tells a reluctant OA to recruit a former army buddy for intel, when the team finds a connection between bombings at government agencies and a veterans' club where the pal spends time. October 5, 2021
FBI0404.jpg 4.04 (#60)
Know Thyself
The team hunts for a serial killer who is targeting young, homeless men. October 12, 2021
FBI0405.jpg 4.05 (#61)
Charlotte's Web
The team investigates the kidnapping of a suburban woman, and OA feels pressure from Mona to change his career path. November 2, 2021
FBI0406.jpg 4.06 (#62)
The team must track down a shooter who is targeting detectives from the same precinct. November 9, 2021
FBI0407.jpg 4.07 (#63)
Gone Baby Gone
After her troubled sister returns from rehab, Maggie struggles to focus as the team attempts to rescue a young girl kidnapped from daycare. November 16, 2021
FBI0408.jpg 4.08 (#64)
Fire and Rain
The team works to extract key info from a vulnerable 9/11 widow unwittingly "dating" the manipulative leader of a terrorist group planning an attack. December 7, 2021
FBI0409.jpg 4.09 (#65)
Unfinished Business
After Rina is critically wounded, the team discovers that the vengeful Vargas orchestrated the shooting and is targeting the rest of the team and their loved ones. December 14, 2021
FBI0410.jpg 4.10 (#66)
As the team investigates a string of jewelry store robberies that culminate in a double murder, they uncover a connection to a 16-year-old foster child. January 4, 2022
FBI0411.jpg 4.11 (#67)
As the team searches for an abducted college co-ed, Jubal tries to obtain lifesaving leads from the father of the abductor's previous victim. January 11, 2022
FBI0412.jpg 4.12 (#68)
Under Pressure
Maggie goes undercover working in a bar to monitor an anti-government group suspected in a series of bombings. February 1, 2022
FBI3.jpg 4.13 (#69)
February 22, 2022
FBI3.jpg 4.14 (#70)
FBI3.jpg 4.15 (#71)
FBI3.jpg 4.16 (#72)
FBI3.jpg 4.17 (#73)
FBI3.jpg 4.18 (#74)
FBI3.jpg 4.19 (#75)
FBI3.jpg 4.20 (#76)
FBI3.jpg 4.21 (#77)
FBI3.jpg 4.22 (#78)

Seasons Season 1Season 2Season 3Season 4
Current characters Maggie BellOmar Adom ZidanStuart ScolaTiffany WallaceIsobel CastilleJubal Valentine
Former characters Ellen SolbergDana MosierKristen Chazal