The return of Jensen Ackles to 'Tracker' has been a highly anticipated development since his impactful appearances in previous seasons. As reported by Collider, series lead Justin Hartley confirmed that Ackles' character, Russell Shaw, will feature prominently in 'Tracker' Season 4, with his first appearance expected early in the season.
Ackles, known for his long-running role on 'Supernatural' and his turn as Soldier Boy in 'The Boys,' first joined 'Tracker' in its inaugural season, appearing in the penultimate episode "Off the Books" in May 2024. He later made a significant return in the Season 3 finale, "The Best Ones," which aired in May 2026. That episode left viewers with a major cliffhanger, as Russell appeared to be shielding Colter from dark truths about their father's past.
Speaking to TV Insider, Justin Hartley, who plays Colter Shaw, offered a direct confirmation of Ackles' presence on set. “Well, right now he is about probably 100 meters away from me,” Hartley quipped, indicating an immediate return. He confirmed Ackles would appear in at least one episode, with plans to “have him back for a few” more, likely in the new year.
The narrative for Russell's return will see him seeking help from his brother, Colter. Rather than providing answers to the lingering mystery surrounding a file he read last season, Russell will arrive in need, facing a situation Hartley described as “not a self-inflicted thing,” but an unexpected crisis impacting a friend. This will prompt Russell to reach out to Colter, whom he trusts to assist. “So, he reaches out, and, of course, Colter's willing to help,” Hartley explained, adding that this will reunite the brothers for a “pretty epic journey.”
Despite the unresolved mysteries and Russell's history of withholding information, the relationship between the Shaw brothers appears to be on a more stable footing heading into Season 4. While Colter may still harbor suspicions about what his brother is keeping from him, Hartley indicated that this underlying tension won't necessarily disrupt their newfound rapport in the upcoming episodes.
'Tracker,' based on Jeffery Deaver's bestselling novel The Never Game, follows lone-wolf survivalist Colter Shaw as he uses his expert tracking skills to locate missing persons, often entangled in complex and dangerous situations. The action-drama premiered to critical acclaim on February 11, 2024, quickly becoming a hit for CBS and earning an 89% approval rating on Rotten Tomatoes for its first season. The series was swiftly renewed for its fourth season on January 22, 2026, and is set to premiere on October 4, 2026, on CBS, with episodes also streaming on Paramount+.