When it comes to breaking TV records, there is no denying that Justin Hartley knows what America wants - just look at his hit show Tracker. Based on Jeffery Deaver's novel The Never Game, Tracker follows a survivalist named Colter (Hartley) who travels the country helping people and law enforcement tackle a variety of mysteries. As the series unfolds, viewers learn more about how Colter's past shaped his current life as a lone wolf. Hartley, 48, serves as both the lead and an executive producer on the show, which found its audience as soon as it premiered in early 2024.