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.