Season 4 of FBI elevates the stakes even higher, delivering some of the most emotionally charged and action-packed cases yet. With a total of 22 episodes, this season explores deeper moral dilemmas, stronger character dynamics, and more intense consequences for the team.
Maggie Bell (Missy Peregrym) and OA Zidan (Zeeko Zaki) continue to operate as the central duo, facing increasingly complex cases that push their partnership to new limits. Their trust in one another is tested repeatedly, especially as Maggie takes on more leadership within the team.
One of the most impactful storylines comes toward the end of the season, when Maggie is exposed to a deadly nerve agent during a mission. The emotional fallout, especially for OA, showcases just how personal the job has become — and reminds viewers of the real dangers these agents face.
Special Agents Tiffany Wallace (Katherine Renee Turner) and Stuart Scola (John Boyd) continue to grow as a team, dealing with high-pressure decisions and the blurred lines between right and wrong. Their dynamic offers a different energy — with Tiffany’s instinct and passion balancing Scola’s more calculated approach.
Isobel Castille (Alana De La Garza) remains the firm but fair team leader, handling operational pressures and moral challenges while ensuring her agents stay focused and protected.
Season 4 also features crossover moments with FBI: Most Wanted and FBI: International, weaving the broader FBI universe together and giving fans a bigger picture of federal law enforcement efforts.
With fast-paced investigations, personal stakes, and some truly shocking turns, FBI Season 4 continues to prove why the series remains a standout in the crime procedural genre.
