As FBI heads into its winter hiatus, Jeremy Sisto warns that Jubal's team is in for an "exciting" and "horrible" case with many twists and turns. "It's scary," Sisto, who plays ASAC Jubal Valentine, exclusively told Us Weekly of the show's two-part fall finale airing on Monday, December 15. He teased that Jubal is "at the center of the storm in this one," and so is his son, Tyler (Caleb Reese Paul).