Humans

Niska faces a critical decision; Mia, Leo and Max remain in hiding; the Hawkins struggle to move on.

Karen and Pete learn about a special Synth being sold on the black market.

Athena's secret is revealed; Niska's consciousness assessments begin; Mia makes a decision.

Mia and Ed get closer; Milo confronts Athena who is worried; Karen and Pete dig deeper.

Mia risks falling into the wrong hands; Odi tries to find purpose in his life.

Athena discovers Milo's real plan; Mia's return has ramifications for the Hawkins.

Mattie reveals the synths' agenda and wants Max's help; Karen makes a life-altering decision.

Karen believes she does not have a future with Sam; Niska and Astrid prepare to return to Berlin.