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Tracker Season 2 comes in hot with Episode 18 “Collision,” an episode that looks simple at first and then keeps stacking twist after twist. This chapter puts Colter Shaw in the middle of a tight, small-town mystery where everyone knows everyone, which makes things messier, not easier.
Tracker Season 2 Episode 18 brings together known faces and new ones, all playing a part in a case that spirals fast. Here is a clean look at the cast and characters who drive this episode and why each one matters.
Tracker Season 2 Episode 18 “Collision”: Recap
Tracker Season 2 Episode 18, titled “Collision,” starts with a missing girl and ends somewhere far darker. Colter heads to Willow Creek, Michigan, after Riley Adams vanishes following a minor car accident. What looks like a routine job quickly turns personal when Colter meets Riley’s terrified mother and senses that something feels off.
Local sheriff Katy steps in, bringing hometown history and assumptions into the search. Clues begin to pile up fast. A broken headlight, skid marks, and whispers from coworkers all point in different directions.
As Colter digs deeper, secrets spill out. Riley’s quiet return from New York, a hidden pregnancy, and a trail of obsessive behavior twist the case into something much bigger. Suspects flip. Motives change. What first feels like a stalker story becomes a disturbing crime driven by desperation and loss.
By the end of the episode, Colter is racing the clock again, proving why Tracker Season 2 thrives on turning familiar setups into nerve-shaking chaos.
Tracker Season 2 Episode 18 cast and character guide
1) Colter Shaw played by Justin Hartley
Colter is at his best in Tracker Season 2 Episode 18. Calm, observant, and always one step ahead, he balances empathy with sharp instincts. In this episode, his ability to read people matters just as much as tracking evidence.
He listens when others talk too much and notices what does not add up. Colter also leans into teamwork more than usual, showing growth while still staying true to his lone wolf style.
Justin Hartley is also known for: This is Us & The Noel Diary
2) Riley Adams played by Annalisa Cochrane
Riley is the emotional center of the episode. A former pageant winner trying to restart her life, she carries secrets that put her in danger.
Her pregnancy changes the entire case and explains why she became a target. Even off-screen for much of the episode, Riley’s choices and fears drive every turn of the story.
Annalisa Cochrane is also known for: One of Us Is Lying & Cobra Kai.
3) Velma Bruin played by Abby McEnany
Velma is the voice that gets the case moving. She connects Colter to the job and keeps things organized from a distance. In “Collision,” she feels like a steady anchor, offering clarity when the case gets overwhelming. Her calm presence balances the emotional chaos on the ground.
Abby McEnany is also known for: Work in Progress
4) Bobby Exley played by Eric Graise
Bobby does what he does best. From tracking phones to handling security footage, he keeps the investigation alive when Colter hits roadblocks. His tech skills crack open the case at key moments and prove again why Colter never works alone, even when he is miles away.
Eric Graise is also known for: The Tomorrow War & Teenage Bounty Hunters
5) Reenie Greene played by Fiona Rene
Reenie steps in when things turn legal. She pulls records, connects past behavior, and confirms what instincts alone cannot prove. Her work in Tracker Season 2 exposes the deeper truth behind the kidnappers and shows how paper trails matter just as much as physical clues.
Fiona Rene is also known for: The Lincoln Lawyer & Fire Country
6) Randy played by Chris Lee
Randy brings energy and sharp instincts to the team. He helps identify suspects and runs critical searches that lead Colter to the right place. His comments add lightness, but his work is serious. In Tracker Season 2, Randy keeps proving his value beyond jokes.
Chris Lee is also known for: Empire & S.W.A.T
7) Monica Harper played by Hayley McFarland
Monica is chilling in how calm she appears. A nurse shaped by repeated loss, her desperation pushes her into horrific choices. In Tracker Season 2 Episode 18, she believes she is saving a child, even while destroying lives. Her quiet confidence makes her one of the most unsettling villains this season.
Hayley McFarland is also known for: The Conjuring & Lie to Me
8) Vincent Rourke played by Christopher Russell
Vincent arrives as a red herring and leaves as a tragic side figure. As Riley’s secret partner and the baby’s father, he complicates the story without being the true threat. His disappearance at the end leaves questions hanging, fitting the uneasy tone of the episode.
Christopher Russell is also known for: Love in the Forecast & Van Helsing
9) Sheriff Katy played by Mercedes De la Zerda
Katy brings local insight and real effort to the case. Her familiarity with the town both helps and blinds her at times. Over the episode, she learns to trust facts over gossip, forming a solid partnership with Colter by the end.
Mercedes De la Zerda is also known for: Billy the Kid & The Good Doctor
10) Tyler Harper played by Tom Stevens
Tyler is quieter but just as dangerous. His criminal past and willingness to follow Monica’s plan make him a ticking bomb. When pressure mounts, he cracks, giving Colter the opening needed to end the nightmare.
Tom Stevens is also known for: The Bear Lake Murders & The 100
Episode 18 works because every character matters. Each choice pushes the story forward, and no role feels wasted. Tracker Season 2 uses this episode to show how fear, love, and obsession can collide in devastating ways.
With strong performances and a tightly packed story, “Collision” only reminded the fans why this show keeps hitting hard week after week.
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