John Scott (Mark Valley)John is a Special Agent for the FBI and Olivia Dunham's partner. They are also lovers, although they are keeping their relationship secret from their colleagues and superiors. John cares deeply for Olivia, giving her important information about the colleagues with whom she crosses paths during the course of her career. But his allegiance to his duties means he does not shy away from doing whatever it takes to solve cases, even if it means putting himself in harm's way.Background: Before joining the FBI, John served in the Marine Corps.