The overarching villain in NCIS: Sydney season 1 could pave the way for intriguing storylines in season 2.
As the latest addition to the expanding NCIS universe, the series introduces the first Australia-based NCIS team, collaborating with the Australian Police Force to investigate crimes involving US Navy and Marine Corps personnel. This season also introduces Richard Rankin, a Department of Defense official overseeing both NCIS and the APF. While Rankin initially appears professional, his behavior in the season finale hints at a deeper connection to the villain, setting the stage for future developments.