The CBS series FBI: International has experienced cast changes and evolving storylines in its Season 4. Recent episodes have focused on character development and team dynamics particularly within the Fly Team.
Tyler Booth Joins FBI: International Cast Played by Station 19's Jay Hayden
Jay Hayden known for his role in Station 19 joined the cast of FBI: International as Tyler Booth. This character was introduced a few episodes prior to Season 4 episode 11. Tyler Booth is integrated into storylines involving Raines and Smitty as part of the Fly Team.
Smitty's Potential Departure and Character Arc in Season 4 of FBI: International

Episode 11 of Season 4 titled "Keep Calm and Deliver the Biotoxin" centered on Smitty's storyline and a possible team exit. Smitty considered resigning from the Fly Team. This consideration arose after Tyler Booth a fellow agent expressed concerns about a potential promotion being jeopardized by past actions involving Smitty. However despite submitting her resignation Smitty's departure is not confirmed as of episode 11's conclusion. Her relationship with Wes and her role within the team remain central plot points.
Vinessa Vidotto's Agent Vo Character Survives Critical Injury and Continues Storyline

Agent Cameron Vo portrayed by Vinessa Vidotto was a focus of concern after the FBI: International midseason finale. Vo was shot in the fall finale leaving her fate uncertain. However episode 9 "The Kill Floor" confirmed Vo's survival. Vidotto discussed her character's resilience and the fast-paced nature of the show which quickly moves onto new cases. Agent Vo's dynamic with Wes and her ambition within the FBI are ongoing themes in Season 4.
Jesse Lee Soffer's Agent Wes and Character Dynamics with Agent Vo and Smitty

Jesse Lee Soffer joined FBI: International as Agent Wes Mitchell. Wes has a history with Agent Vo having trained her earlier in her career. Their evolving dynamic is a feature of Season 4. Agent Wes also plays a role in Smitty's storyline. He expresses his desire for her to remain on the Fly Team highlighting her importance in keeping him in check and acknowledging the team's improved functioning since his arrival after Agent Scott's departure.
Episode 10 Sneak Peek: Team Tasked with Protecting Russian Biochemist's Daughter
Episode 10 of FBI: International Season 4 titled "Keep Calm and Deliver the Biotoxin" involves the Fly Team protecting the daughter of a deceased Russian biochemist. The team members Smitty and Andre are tasked with ensuring the daughter's safety as she transports sensitive biotoxins research. The daughter Yulia Sviridov insists on personally overseeing the transfer of her father's research emphasizing her commitment to fulfill his last wish. The episode promo suggests rising stakes as the team faces external threats attempting to seize the research and protect Yulia.