As the season finale of CBS's Tracker unfolds, Colter finds himself still grappling with the enigmatic phone number tucked away in his father's journal. Randy (Chris Lee), ever the curious sleuth, uncovers that the number belonged to David Pearson, a man who took his own life in 2003—the same year as Colter's father's demise. David Pearson, a research scientist, though his work remains shrouded in mystery. Randy's detective instincts are on high alert, given that he discovered Pearson lived in Hampton, Virginia, not far from Langley—a place where government connections could be lurking. Randy vows to delve deeper into David's past.
The season's climax finds Colter (Justin Hartley) returning to Echo Ridge, his hometown. His mother, Mary (Wendy Crewson), reminds him that his visit is only possible if there's work in the area—a truth she is all too familiar with. She misses Dory and wishes she'd receive a visit from her too. Colter assures her that he recently saw Dory but has no clue about Russell's current endeavors.
Mary has entrusted Angela at the Little Fork Restaurant with Colter's contact information because her brother Bill is missing. Mary's anxiety is palpable—rumors are swirling that Bill has relapsed into drinking. And the town itself is undergoing a transformation; a recent bust of a meth lab adds to the unrest.
Colter gives his mother a loving kiss on the forehead before setting out to see Angela. Turns out, Angela has known Colter since he was a child. After reminiscing about old times, Angela assures Colter that Bill wasn't drinking but was fixated on a man and a young boy who had come through the restaurant six months ago. The boy, Chris (Kingston Goodjohn), was around 11 or 12, and the man with him exuded a sinister vibe. Despite appearing afraid, Chris didn't try to run away. When the man used the restroom, Bill inquired about their relationship, only to be told to mind his own business.
Unfortunately, the creep paid in cash and Bill never saw his car. Since then, Bill has been obsessed with finding out the boy's real name. He discovered that Chris had been kidnapped outside San Francisco. Ever since, Bill has blamed himself for not helping the kid more. About a week ago, he thought he saw the man in town and wanted to hire a private investigator but couldn't afford it. And then two days ago, he went missing after leaving the restaurant.
Colter dialed Bobby to scour Bill's phone records, only to find the digital trails unremarkable. Bobby, played by Eric Graise, traced Bill's signal to a final woodland location where it last pinged. He meandered through the trees until a chainsaw's whine captured his attention. Two men wielding chainsaws halted, weapons drawn, as Colter approached. They were poaching timber on federal land, but Colter's mind was elsewhere; he merely sought confirmation if they'd laid eyes on Bill Weaver. Another figure strolled up, ordering his companions to disperse and holding Colter at rifle point before breaking into a wide grin once they were gone. His name was Joe (Drew Powell), and he greeted Colter's return to town with relish, as if an old friend had just arrived.
Over a cup of coffee in Joe's tent, Colter divulged his mission. Joe nodded in agreement with Colter's mother's observation that a dark cloud had descended upon the town, where once neighbors had helped one another. Joe revealed that Bill had been in town two days prior, engaging in a confrontation with one of his crew members, Pedro. Pedro recounted that Bill wanted to discuss the incident at the restaurant six months ago involving a youngster. Pedro steered clear of the matter, warning Bill to avoid Ronnie Yates—a ruthless individual who oversaw muscle and distribution for a meth operation, with ties to the Aryan Brotherhood. Despite Pedro's admonitions, Bill persisted in his pursuit.
Colter inquired about Yates' whereabouts, promising to keep Joe's involvement out of it. Joe suggested Timberline, the pizza joint, as a possible location to find Yates, who was dating a girl who worked there.
Colter staked out the pizza place at just the right moment; Ronnie was there picking up a pie. He sneaked into Ronnie's truck and held him at gunpoint, demanding information on Bill's whereabouts. Ronnie claimed ignorance, but when Colter showed him a picture of Chris, he reluctantly relented and named Carl Murphy—a trucker occasionally used by Ronnie's crew for transportation, though not an actual member himself. Ronnie confided that he had warned Carl about Bill's interest and threatened to find Carl himself if he got mixed up with kids. Colter warned him to stay clear of it all.
As Velma (Abby McEnany) fretted over Reenie (Fiona Rene), who had narrowly escaped death, Reenie was evasive towards her client, Leo Sharf, and reluctant to discuss the incident. Instead, she was eager to assist Colter in the case. Her discovery that Carl Murphy was a registered sex offender and a licensed independent driver, not affiliated with a large trucking company, painted a chilling picture of a potential child kidnapping operation. With an address to a property owned by Carl's father outside Echo Ridge, Colter wanted to investigate further.
As Colter's mother neatly folded his clean laundry, she stumbled upon a box containing her husband's belongings, a detail Colter had overlooked during his breakfast visit. Although Carl's father had been deceased for years, there was still smoke emanating from a barrel on the property. Breaking the lock, Colter discovered that someone had been living in the trailer, with clothes and food scattered everywhere. His search led him to discover polaroid photographs of children, which he promptly sent to Bobby and Randy. Their investigation uncovered missing persons reports on the children from various parts of the country, leading Colter to believe that Carl was part of a child trafficking network and not acting alone. He was convinced that this place was a stash house and that Carl had drugged the kids before moving them.
Colter sent Bobby a receipt with Carl's cell phone number and promised to get back to him. Before leaving, he spotted a carved wolf with his father's name at the bottom and made his way to a covered vehicle in the nearby woods, where he found Bill's dead body.
Sheriff Pickens met Colter at the crime scene and agreed that Carl was involved in a child trafficking ring. He believed that Carl had killed Bill because he had gotten too close to the truth. Pickens called in the federal authorities to help him locate Carl.
Colter kept the wolf carving as a souvenir and called his mother with news of Bill's murder. He asked if she recognized the name Carl Murphy, but she did not. Colter was certain that his father would never have been mixed up with such people. His mother reminded him that she didn't know much about his father's secrets but was sure that what had happened to Bill had nothing to do with their family.
She inquired about the box and why Colter hadn't told her about it, expressing frustration that he wouldn't let go of this case. They agreed to talk when he had finished with it. Bobby located the burner phone and sent Colter its location, which was pinging on a remote farm. Bobby warned Colter that he really should bring backup, but Colter was confident in his ability to figure it out.
As the night's darkness settled in, Joe joined Colter with a determination to bring down a pedophile. Colter's uncertainty about whether Carl was alone was thankfully met with Joe's knowledge of a secret entrance. They crept up and spotted two men outside, Colter swiftly choking one while Joe tied up the other. Inside, they found one boy and learned that Paul had been taken to the barn. Joe stayed with the boy, calling the cops, while Colter raced to the barn with his gun drawn.
As he surveyed the barn, he saw two men with Paul just as a van pulled up outside. Inside the farmhouse, Joe saved the boy from one of the abductors, but a gunshot should have alerted those in the barn. Yet, it didn't. Colter made his way slowly to the men holding Paul, knocking out one while Carl ran off, yelling for the van driver to shoot Colter. Instead, Colter shot the driver while Carl tried to escape in the van. Colter rushed outside and shot the front of the van, forcing it to stop. He then shot Carl twice in the legs as he tried to run off.
Colter pinned Carl to the ground and demanded to know where he had taken Chris and the other boys. When Carl didn't answer, Colter instructed Joe to cut off one of his fingers each time he failed to respond. Carl finally confessed that the kids had been sent to Texas, preferring to keep his fingers rather than reveal any more information.
Later, Colter shared with Angela that Bill had been right—the FBI had found Chris and six other kids in Texas thanks to Bill's persistence. But Colter couldn't stay for a meal; he needed to take care of something else.
Colter had learned from Carl that he had gotten his father's wolf carving from his uncle. He obtained the uncle's name and paid him a visit. The uncle swore he had nothing to do with Carl and immediately recognized Colter Shaw's name, noting the resemblance to Ashton.
The uncle recalled knowing Ashton back in the day. He described Colter's dad as a smart man who didn't like anyone poking around in his business. They respected each other, and the uncle had helped him install a wind turbine for power off the grid. Ashton had given him the carving and also delivered a lecture on wolves.
The uncle knew that wasn't what Colter really wanted to talk about. He confirmed that Ashton had many enemies and that he was on the cliff the night Ashton died. Colter held the uncle at gunpoint, and the uncle confessed that he had thrown Ashton off the cliff—but shockingly revealed that he had done it because Colter's mother had asked for his help!
