Humans

The Hawkins buy the latest gadget, a Synth. But are they in danger from her and the hunted Leo who is desperate to find her? Meanwhile George's beloved synth Odi malfunctions...

Laura becomes increasingly suspicious of Anita, the perfect 'mother' figure. George is horrified to be given a new synth, Vera.

Anita saves Toby's life -but is there something strange about Anita? George breaks free and Pete is angry at the brothel murder cover-up. Niska is free -but has she found a second victim?

Joe gets too close to the beautiful Anita, whilst Karen is perhaps not what she seems. Leo gets one step closer to finding Mia and Niska wreaks revenge.

With Karen on her tail, Leo sends Niska to George's house an an unlikely friendship begins. Joe's secret threatens to destroy the Hawkins family.

Laura and Mattie's relationship reaches breaking point. Karen decides to tell Pete the truth -but can he handle it? Leo is achingly close to his family being reunited, until one of them is forced to make the ultimate sacrifice.

Desperate Karen hunts down Niska -can George save her from a violent fate? The synths stay with the Hawkins, but Hobb is not far behind...

When the synths are captured by Hobb, only the Hawkins can save them. The future of humanity lies in their hands -what will be their choice?