Humans

The Hawkins, a close-knit yet struggling family, purchase a synthetic assistant named Anita to help with daily life, but they begin to notice strange and unsettling behaviors that raise questions about her true nature.

Laura grows uneasy as Synth Anita's presence becomes more prominent, while Leo delves into risky territory in his search for answers.

Laura reluctantly takes in Anita after she saves Toby from a car accident. Meanwhile, George makes plans to leave town with Odi, and Pete's outburst leads to a suspension from his job.

Laura urges the family to have Anita tested after Mattie reports seeing her behave oddly, while Hobb pursues a lead on Niska.

A surge of public fear surrounds the Killer Synth case as it dominates the news. Karen intensifies her pursuit of Niska, raising questions about whether her drive is purely professional or rooted in personal reasons.

The Hawkins family faces its greatest turmoil as tensions reach a breaking point, with Joe estranged and the children growing weary of their parents' deceit. Laura takes the decisive step to reveal the truth, hoping to mend the fractured relationships.

Karen, feeling abandoned, goes to George's house in search of Niska, while Pete becomes determined to uncover Karen's true identity. In the meantime, the pursued Synths seek shelter at the Hawkins residence.

The Hawkins family, shaken by the Synths' capture, come to appreciate the importance of Mia and her family in their lives and resolve to support them.

The Hawkins family attempts to rebuild their lives after recent upheavals. Meanwhile, Niska makes a pivotal choice while evading capture in Berlin. Close to a coastal town, Leo, Max, and Mia face danger from an enigmatic organization.

Laura weighs a difficult decision regarding Niska, while Karen and Pete investigate a rare and valuable Synth being traded illegally. Meanwhile, Hester employs dubious tactics to extract information, Leo is assigned a new task, and Mia takes a dangerous chance to assist Ed, potentially exposing her own secret.

Athena goes to the United Kingdom, where a significant personal secret comes to light. Niska begins evaluating consciousness, while Joe becomes increasingly aware of Sophie's unusual behavior at home. Meanwhile, Karen's return to work with Pete strains their relationship, and the Synths are compelled to abandon their hideout, only to be surprised by Mia's unexpected choice.

Mia and Ed's relationship faces challenges after their secret is exposed, while Toby's growing connection with Renie is strained when he disrupts her carefully maintained facade. Niska's situation improves unexpectedly with the arrival of a surprise witness provided by Laura, and Milo becomes entangled in Athena's ambiguous research plans. Meanwhile, Karen and Pete advance their investigation into the "seraphim," and Leo begins to distance himself from Max as Hester's influence over him becomes more apparent.

Mia faces danger from a mysterious organization and takes bold steps to protect herself. Meanwhile, Odi grapples with existential uncertainty, Sophie is fascinated by Renie's synthetic lifestyle, and Pete begins to recover from a recent attack. Karen's confession strains her relationship, while Hester and Leo investigate the Silo to find the sniper who killed Ten, leading to a tense encounter. Mattie also leaves home in an effort to reconnect with Leo.

Athena questions Milo's integrity and is taken aback by his true intentions. Mia's unexpected return disrupts the Hawkins family dynamic. Mattie locates Leo but must decide whether to confide in him. Max aims to establish a new Synth community, but becomes concerned about Leo's extreme methods and acts to address the threat.

Laura seeks Niska's help after learning the Synths plan to infiltrate the Silo, while Mattie enlists Max to rescue Leo from Hester's grasp. Toby gets a troubling message from Renie, and Karen consults Athena before making a significant choice. Meanwhile, Mia and Hester attempt to enter the Silo, but their mission quickly goes awry.

The final episode of the acclaimed drama sees Karen, reeling from the Silo tragedy, take decisive action to separate from Sam. As Niska and Astrid prepare to return to Berlin, Niska faces a difficult choice about her family. Meanwhile, Joe delivers a shocking revelation to Laura, and Hester pursues vengeance against Leo with unwavering determination.

Tensions rise among the Synth community as internal divisions emerge, jeopardizing their stability and forcing both families to reunite in a struggle to ensure the Green-Eyes' survival.

Max deals with the fallout of a difficult choice, Laura begins to suspect she's being kept in the dark by the Dryden Commission, and Joe uncovers a surprising truth about Karen.

Leo begins to grapple with his humanity as Mattie brings him back to the Hawkins house, where a spontaneous evening deepens their emotional connection. Meanwhile, Laura investigates the classified Operation Basswood and seeks assistance from Dr. Neil Sommer, leading to unforeseen developments. Joe agrees to support Karen with Sam, and Niska receives an enigmatic communication.

Laura leads a tense Dryden Commission visit to the Railyard, where Agnes' growing anger could jeopardize the mission. Meanwhile, Mia confronts her past when she faces Ed, and an evening out for Karen, Sam, and Joe takes a tragic turn.

Sam grapples with the aftermath of the Waltringham incident while Joe attempts to support him, as revelations unfold and risky strategies are set in motion at the Railyard.

Laura uncovers a dangerous secret that puts her and those close to her in jeopardy, while Niska faces impossible choices on her enigmatic path to survival.

Laura struggles with the emotional aftermath of a difficult choice. Niska faces a surprising development on her journey. Meanwhile, Leo hurries to reach Max but finds himself in a perilous situation.

Humans and Synths confront each other in a tense standoff, as Mia and Max's nonviolent protest puts them in grave danger. Meanwhile, Laura, Niska, and Mattie must make difficult choices that will shape their futures.