When a cult member is found murdered in a cave, Andri learns the young man was once his suspect in a woman's disappearance in 2013.

The arrival of biker-gang reinforcements from Denmark rattles and divides the cult; the police learn how Ívar, the bikers and the cult are connected.

The police interrogate Sverrir but get interrupted; the cult takes a step to ensure its safety; the bikers catch Freyja writing in a notebook.

To get proof of Hopper's connection to the drugs, Sonja sends Sverrir as a mole to the biker gang's warehouse, where Hopper tests his trustworthiness.

When Sverrir disappears, the police begin a search; on probation, Andri visits his mother; Gunnar discovers he's now persona non grata in Hopper's eyes.

Kristján is questioned about his alibi; Andri spots a well-placed security camera; at the wake, the truth behind Ívar and Lina's deaths is unveiled.