Tonight’s episode of Tracker titled, “Angel,” leans the show into some of its bleakest territory so far, weaving together a disturbing case, the dangers of true-crime obsession, and a closer look at how far Colter will go to protect someone who stumbled into the wrong mystery. It’s an episode built on tension from the opening scene, and it never really lets you breathe until the final moments.
The hour begins in Fort Wayne with two Bio Zone cleaners arriving at what appears to be a tragic double death. Their routine is clinical and quiet, but layered with the uneasy sense that something is off. Margo, one of the cleaners, takes photos on her phone, something she clearly does more often than her boss would like, and it’s this habit that sets the entire case in motion. Her phone won’t stop pinging as they leave, and the sight of the car following the van signals that her interest in crime scenes may have crossed a line she didn’t realize was there.
Colter gets the call from Randy just as he’s asking about the David Pearson records that Russell sent over for Randy to investiagte, a thread the show continues to drop in at just the right moments this season. The missing-person case comes from Bio Zone, and with Margo gone for a day and her phone and car missing, Colter heads to Indiana to figure out what really happened after she left the Harden house.
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| “Angel” – TRACKER, Pictured: Justin Hartley as Colter Shaw. Photo: Sergei Bachlakov/CBS ©2025 CBS Broadcasting, Inc. All Rights Reserved. |
The investigation quickly grows more unsettling. Margo’s boss explains that she had become secretive, especially after getting involved with someone she met in a true-crime chat room. Her interest in the Harden case wasn’t casual. And when Colter finds Margo’s abandoned car with blood on the dash and a second phone that Randy confirms belonged to Bio Zone, the tension shifts. Whatever Margo uncovered did not stay online.
The episode also brings Reenie’s new assistant, Mel, into the fold. Her genuine enthusiasm for true-crime communities helps Randy understand the kinds of spaces Margo was moving through. It’s a small touch, but it adds realism to the way the modern true-crime world operates, especially online.
Colter’s discovery of the burner phone leads him straight to a police scene, and then to Gunther, a man photographing the area. Gunther running from Colter sets up a misunderstanding that becomes one of the episode’s strongest dynamics. He and his friend Eddie aren’t killers. They’re true-crime enthusiasts who document cases, collect memorabilia, and—despite their unusual hobby, care deeply about solving mysteries. They met Margo online and consider themselves the people who understood her best.
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| “Angel” – TRACKER, Pictured: Jay Lee as Eddie, Justin Hartley as Colter Shaw and Connor Paolo as Gunther. Photo: Sergei Bachlakov/CBS ©2025 CBS Broadcasting, Inc. All Rights Reserved. |
With their help, Colter returns to the Harden house and uncovers what Margo had sensed: Mort Harden did not accidentally fall down the stairs. Someone staged the scene. The drag marks, the inconsistencies, and the hidden room upstairs reveal their killer had been living inside the house, watching everything. The angel wings drawn on the wall become the key detail that ties multiple deaths together, a signature at several cases involving disabled victims and their caregivers.
From here, the episode takes an even darker turn as Colter identifies a connection through a physical therapy centre and discovers the name Francis Gable. The scenes in Francis’s home are some of the most disturbing the series has shown. The basement, the remains of Francis’s mother and brother, and the calm, ritualistic way he speaks to Margo paint him as someone broken long before the episode began. His belief that he is saving people from suffering, his “angel of mercy” delusion, creates an antagonist who is frightening not because he is violent, but because he believes he is righteous.
Colter’s race to stop Francis from harming Gunther and Eddie is tense and well-paced. Margo’s attempts to escape and her fear for the two men who had simply been trying to help her add emotional weight to the final confrontation. Colter saves all three, bringing the case to a close that is both relieving and unsettling.
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| “Angel” – TRACKER, Pictured: Justin Hartley as Colter Shaw. Photo: Sergei Bachlakov/CBS ©2025 CBS Broadcasting, Inc. All Rights Reserved. |
Overall, Angel stands out as one of the darkest and most emotionally heavy episodes of Tracker yet. Its exploration of trauma, obsession, and the dangers of chasing crime for entertainment feels grounded in the realities of today’s online world. It’s an episode that lingers, not just because of the killer’s motive, but because of how close Margo came to being another unseen victim—and how easily it all could have been missed if someone like Colter hadn’t stepped in.
This one leaves viewers thinking long after the credits roll, and it continues to raise the stakes for both the season and Colter’s personal journey.