FBI: International 4×10 Promo “Keep Calm and Deliver The Biotoxin”

FBI: International 4×10 “Keep Calm and Deliver The Biotoxin” Season 4 Episode 10 Promo – When a Russian biochemist is assassinated for trying to defect with his highly sensitive biotoxins research, the team springs into action to protect his daughter, whose father’s last wish was that she get his research to a trusted microbiologist.