Justin Hartley's wife, Sofia Pernas, is coming back to his hit show Tracker - just in time to see him shirtless. CBS released the first look at the third season's return on Sunday, March 1, when Billie (Pernas) arrives to help Colter (Hartley) on a case. There is probably a plot-related reason why Hartley's character has to strip down in front of Billie, but who needs an excuse to see the main character shirtless? Not Us. According to the official synopsis, Colter will be "injured and framed for a string of murders," which causes him to lose contact with Reenie (Fiona Rene) and Randy (Chris Lee). He must then "rely on unexpected ally Billie to stop a relentless assassin, uncovering a murky truth where justice and vengeance blur." Executive producer Elwood Reid previously confirmed Pernas' return, telling Us Weekly in September 2025, "She'll be back. We have a really good, spicy midseason finale and Billie is coming back in the winter premiere." Justin Hartley Receives Support From Wife Sofia Pernas at Golden Globes Pernas, 36, reprising her role as Billie doesn't mean Colter will finally settle down. CBS "It's tricky because he's never in one place for very long. These are conversations that I have with Justin all the time. One thing I think makes the show work is early on in each episode, you get an emotional hook with Colter about him wanting to help the person that's asked him for help," Reid explained. "It does feel weird where he's like, 'Hey, wait a minute, I'm gonna go for a five-minute booty call in the middle of the episode.' So that's something we haven't been doing." At the time, Reid hinted how Tracker will continue to invest in Billie outside of her romance with Colter. "The challenge with Billy is [that] she's a fellow tracker. She does what Colter does. So whenever you have her in an episode, you always have to figure out something for both of them to do," he noted. "They're both two alphas when they're together. We found a really fun way to use her this season." Justin Hartley and Wife Sofia Pernas' Sweetest Quotes About Working Together Tracker marks the third time Pernas has worked with her husband. Hartley, 48, first shared the screen with Pernas on The Young and The Restless in 2015. Years later, they reconnected off screen and exchanged vows in 2021. Along with Tracker, they collaborated on the short-lived Quantum Leap reboot. CBS "She's wonderful. I mean, if I had my choice, I'd spend every minute with her," Hartley gushed to Us in July 2024. "What's really cool is when you meet someone that means so much to you, that you're so proud to be with and so proud of, and just such a fan of, and to get to see her work, because she's such a talented actor. She elevates scenes, and so it makes my job easier, actually. But yeah, it's just wonderful to work with her." In addition to Pernas, Tracker has also struck gold with a wide variety of guest stars who keep returning, including Jensen Ackles, Melissa Roxburgh and Jennifer Morrison. Tracker returns to CBS Sunday, March 1, at 9 p.m. ET.