Six months after the events of Season 2, Lt. Joe Leaphorn and Jim Chee investigate the disappearance of two boys, with only an abandoned bicycle and blood-stained patch of ground left in their wake. Meanwhile, Bernadette Manuelito attempts to settle into her new life 500 miles from home with the Border Patrol, but stumbles across a conspiracy involving human and drug smuggling with far-reaching implications.
Lt. Joe Leaphorn and Sgt. Jim Chee investigate the disappearance of a Navajo boy. Manuelito makes a sinister discovery while adjusting to life on the border patrol. An FBI agent comes to solve a case linked to Leaphorn's recent past.
Leaphorn and Chee find themselves on a manhunt after making a shocking discovery. Special Agent Washington questions Leaphorn about a person of interest. Manuelito puts her job on the line when she searches for answers at a local ranch.
After a close call, Leaphorn and Chee follow the trail of a new suspect. The discovery of a body sends Special Agent Washington in a different direction. Manuelito puts a target on her back as she digs deeper into the mystery.
Chee pays Manuelito a visit after discovering a link between their cases. Leaphorn pursues a fugitive suspect. Special Agent Washington interviews an eyewitness to the crime she's investigating.
Following a grisly murder, Leaphorn and Chee strike out on their own when the FBI take over their case. Special Agent Washington pays the Leaphorns an unexpected visit. Manuelito searches for evidence south of the border.
Leaphorn is forced to confront his worst fears and darkest memories when he puts his life on the line to prevent another murder.
Leaphorn and Chee retrace their steps after uncovering a vital clue; Special Agent Washington presses for more information; Manuelito moves quickly to execute a search warrant.
Leaphorn and Chee call upon all their resources to solve the case and serve justice after learning the identity of the killer. Bernadette fights for her life after coming face-to-face with the truth.