Season 4

Colter's search for a teenage boy's missing father leads him to a dangerous criminal operation at the Port of Los Angeles.

When a mother and daughter vanish while hiking the Pacific Divide Trail, Colter races to find them after discovering they were being stalked.

Colter gets hired to track down a woman who disappeared after an argument with her husband in a deserted Texas town. Meanwhile, an unexpected reunion with an old friend, Adam Shevlin, leaves Reenie revisiting her past.

When a woman disappears after helping a terrified teenage runaway, Colter uncovers a disturbing case of abuse and embarks on a desperate search to save them both.

After a military contractor's wife and daughter are kidnapped, Colter discovers Russell is investigating a related lead. The Shaw brothers join forces to uncover a high-stakes cover-up.

When Reenie enlists Colter's help to locate her mentor's estranged daughter, the search uncovers a dangerous conspiracy.

When Colter is hired to locate the owner of a small South Carolina Inn, the search puts him at odds with rival tracker Luke, whose reckless methods and questionable morals have put innocent lives at risk.

When two children and their au pair vanish from a wealthy Maryland family’s home, Colter races against the clock to find them. Meanwhile, Reenie calls in a family favor while investigating the circumstances surrounding the death of Mel’s mother.