Tracker has undergone several cast changes and plans to introduce more characters. But have these changes been effective?
New Characters and Cast Adjustments
In an exclusive conversation with Us Weekly, executive producer Elwood Reid discussed the introduction of Mel, played by Cassady McClincy Zhang, through Reenie, portrayed by Fiona Rene.
Reid explained, “For the show to succeed, Reenie’s role in the office must be independent or capable of telling its own stories. Previously, with Reenie just waiting for Colter’s call, it wasn’t working.”
He continued, “We intentionally brought Randy in to see if it would work, and it did very well. It was enjoyable to see them together. We wanted to add some female perspectives, which led to Mel’s inclusion.”
Future Developments
Reid hinted at more additions, “We’re introducing another character in episode 11. This character initially brings work to Reenie, but it evolves into something larger. It will be an exciting character.”
He added, “It’s about expanding the world beyond Reenie just relaying information to Colter. We’re developing the characters more deeply and exploring their personal lives. This will be particularly true for Reenie, which I believe will pay off.”
Before Kathleen Robertson and Mark Engelhardt were cast in recurring roles, Reid shared insights. Robertson will portray Maxine, a successful attorney who engages Reenie in what appears to be routine work for a class action lawsuit. However, Maxine may have ulterior motives.

Engelhardt will play Emile Lang, described as “cold, calculating, and methodical,” with his own moral code.
Current Cast Dynamics
Alongside main character Colter (Justin Hartley), the ensemble includes Teddi (Robin Weigert), Velma, hacker Bobby (Eric Graise), and attorney Reenie. Teddi’s character was written off after season 1, with Velma stating they needed space. Velma later worked with Reenie, and Teddi wasn’t mentioned again in season 2.
Concerns arose when Graise was absent for six episodes. His cousin Randy (Chris Lee) stepped in to assist Colter, which led to some backlash as viewers had become fans of Graise.
It was later announced that Graise and McEnany wouldn’t be returning for now.
Show’s Evolution
Reid emphasized, “The show is evolving. Characters like Randy, Reenie, or Bobby can’t just be there to provide answers. The challenge is to explore their stories, which makes the show interesting and prevents it from becoming formulaic.”
Reid stressed the importance of avoiding complacency, saying, “Each week, Colter encounters a new case in a new place. How he resolves these cases and who he interacts with is always open to change. We plan to introduce more unique local characters, allowing Justin to showcase his skills with guest stars.”
In his latest interview, Reid reflected on the changes. “When characters resonate, we try to bring them back. Although the show can’t always do this, it enhances the sense of connection.”
He noted that Hartley’s character remains the constant, adding, “The audience connects with him because he’s a mystery, even to himself. We see glimpses of his past, but it’s uncertain if it will ever be fully revealed. The biggest improvement this year has been getting characters in the same room, which the audience enjoys.”
Tracker returns to CBS on Sunday, March 1, at 9 p.m. ET.