Tracker Season 4 Episode 4 photos preview “Purification,” airing tonight, Sunday, October 25, from 9:00–10:00 p.m. ET/PT on CBS. Justin Hartley returns as Colter Shaw alongside series stars Fiona Rene, Chris Lee and Cassady McClincy Zhang.
Colter’s latest search begins when a woman disappears after helping a terrified teenage runaway. Following her trail uncovers a disturbing case of abuse, turning the assignment into a desperate effort to save both the missing woman and the teenager.
What Is “Purification” About?
An attempt to help someone in danger becomes the starting point for this week’s missing-person case. The woman’s encounter with the runaway connects their stories, giving Colter two people to find as he works to understand what happened.
CBS’s synopsis points to abuse at the center of the investigation, but does not identify those responsible or explain where the missing pair have gone. The preview leaves the circumstances of their disappearance and the outcome of Colter’s search for tonight’s episode.
The case follows “Original Parts,” which took Colter to Texas. Catch up with our Tracker Season 4 Episode 3 recap and review before the new hour. That article contains spoilers for the previous episode.
Tracker Season 4 Episode 4 Details
Episode
Season 4 Episode 4, “Purification”
Air Date
Sunday, October 25, 2026
Time
9:00–10:00 p.m. ET/PT
Network
CBS
Streaming
Live and on demand with Paramount+ Premium; next-day viewing Monday, October 26, with Paramount+ Essential
Written By
Sharon Lee Watson & Dominique A. Holmes
Directed By
Tori Garrett
Who Stars in Tracker Season 4?
Justin Hartley leads as reward seeker Colter Shaw. The ensemble includes Fiona Rene as attorney Reenie Greene, Chris Lee as tech expert Randy and Cassady McClincy Zhang as Melanie “Mel” Day.
Tracker Season 4 Episode 4 Photos — “Purification”
Tracker Season 4 Episode 4 airs tonight, Sunday, October 25, from 9:00–10:00 p.m. ET/PT on CBS. Paramount+ Premium subscribers can watch live and on demand. Paramount+ Essential subscribers can stream the episode the next day, Monday, October 26. Catch up through the official Paramount+ Tracker page.
Thomas Miller is the founder and Editor-in-Chief of Seat42F, covering television, movies and streaming entertainment. He launched Seat42F in 2007 and has spent nearly two decades covering the entertainment industry.
