9-1-1: Lone Star Shakes Things Up: Parker Young Joins as Carlos’ New Partner in Explosive Final Season

In the highly anticipated fifth and final season of 9-1-1: Lone Star, fans will be thrilled to see a familiar face joining the cast. Parker Young (known for his roles in Enlisted and Suburgatory) is set to make a major impact as Campbell, a Texas Ranger who will work closely with Carlos. Making his debut in the season premiere on September 23 (8/7c on Fox), Campbell promises to bring fresh dynamics to the show—and TVLine has shared an exciting first look.

According to showrunner Rashad Raisani, sparks fly when Campbell and Carlos team up. “There’s a very special chemistry between these two,” Raisani tells TVLine. “They complement each other perfectly on cases and end up forming a strong friendship.” Their relationship, though brotherly and initially contentious, quickly blossoms into one of the show’s most compelling partnerships. Raisani promises that their storyline will be “explosive and dynamic,” teasing that viewers are in for some of the series’ most intense episodes yet.

Raisani even sees bigger potential for this duo beyond 9-1-1: Lone Star: “I’ve been desperately pushing for a spinoff with them,” he reveals. “I believe this season will prove how powerful their partnership is.” With a glowing endorsement like that, fans will undoubtedly be eager to see where this new dynamic leads—and whether a new chapter for these characters could materialize in the future.

However, Campbell’s arrival is just one part of the action-packed narrative this season. T.K. and Carlos’ relationship will face new challenges, starting with a mystery from the past. According to the official logline from Fox, “On his 30th birthday, T.K. receives a surprise visit from someone who could change his and Carlos’ lives forever.” Meanwhile, Carlos becomes consumed by a personal mission, determined to solve his father’s murder—a quest that could put their marriage to the ultimate test.

With shocking twists, heart-pounding drama, and the introduction of intriguing new characters like Campbell, 9-1-1: Lone Star promises to go out with a bang in its final season. Fans won’t want to miss a second of what’s sure to be an unforgettable ride.