When eight researchers at Tsalal Station vanish without a trace, Danvers orders a search. After handling a workplace dispute, Navarro tries to convince a skeptical Danvers that the men's disappearance is connected to the murder of a local activist.

As Danvers and Prior learn more about Tsalal – and find an unlikely location for the physical evidence – Captain Connelly threatens to move the case to Anchorage. Later, Navarro and Danvers find a connection between one of the Tsalal men and Annie.

While Hank leads the search for Clark, Prior asks Danvers about the murder-suicide case that drove a wedge between her and Navarro. Then, Navarro and Danvers seek out a local hairdresser for insight on Annie -- which leads to a tip.

When Julia's mental health struggles resurface, Navarro brings her to a local facility, promising that this time will be better. Later, Danvers and Navarro confirm the location of Annie's murder, and Danvers levies a harsh punishment on Leah.

As Prior digs into the links between Tsalal and mining company Silver Sky, Navarro rescues Leah from a local protest that has turned violent. At a meeting with Silver Sky exec Kate McKitterick, Danvers is warned not to pursue the case any further.