Main •
Jack Garrett (
Gary Sinise), Senior Supervisory Special Agent and International Unit Chief. :Garrett is a 20-year veteran agent with the FBI and is the Unit Chief of the International Response Team (IRT). In his personal life, Garrett is married to Karen (
Sherry Stringfield) and together have six children, including their oldest, a son named Ryan and their middle child, a daughter named Josie. •
Clara Seger (
Alana de la Garza), Senior Supervisory Special Agent, Linguistics Specialist, and Cultural Anthropologist. : Seger is a smart, well-traveled, and multi-lingual cultural anthropologist and special agent with the IRT. Before rejoining the IRT in October 2015, Seger was married to a man named Brad who was a fellow agent and, like her, knew Jack. In 2013, she took a sabbatical from the FBI after her husband Brad died, during which she visited countries across the globe. •
Matthew Simmons (
Daniel Henney), Supervisory Special Agent and Special Operations Agent. • Josie Garrett (
Brittany Uomoleale), the middle daughter of Jack and Karen Garrett's six children. • Kristy Simmons (
Kelly Frye), the wife of Matthew Simmons and the mother of their four children, Jake and David Simmons and their two daughters. • Jake Simmons (Ezra Dewey), the son of Matthew and Kristy Simmons and the brother to David Simmons. • David Simmons (Declan Whaley), the son of Matthew and Kristy Simmons and the brother to Jake Simmons. • Ryan Garrett (
Matt Cohen), Jack's and Karen's oldest son who was accepted to and received training at the
FBI Academy. He later becomes an undercover agent in Mexico, where he crosses paths with the IRT in the second season. ==Episodes==