Laura returns from a work trip to discover that her family has purchased a Synth, a humanoid android, named Anita.
Laura grows more and more suspicious of Anita, starting to feel threatened by her presence. Meanwhile, George is horrified to be given a new synth, Vera.
Laura tries to return Anita to the shop, against her family's wishes, with Joe telling Laura she's simply imagining Anita's strange behaviour.
Joe finds himself too close to Anita, and Karen is not what she appears. Meanwhile, Leo is closer to finding Mia, and Niska is out for revenge.
An unlikely friendship blossoms when Leo sends Niska to George's home. Meanwhile, Joe's secrets puts the entire Hawkins family in jeopardy.
Laura confides in Mattie, and Pete rejects Karen when she comes to him with the truth. Leo and Mia are reunited, but Max comes to make the ultimate sacrifice.
Gemma Chan
Mia
Emily Berrington
Niska
Colin Morgan
Actor
Ivanno Jeremiah
Max
Katherine Parkinson
Laura Hawkins