As Leo struggles to come to terms with being human, Mattie takes him back to the Hawkins' home, where a surprise night out allows them to confront their feelings for each other. Laura is determined to uncover the truth about the too-secret Operation Basswood and tries to enlist Dr Neil Sommer's help, only for things to take an unexpected turn. Joe reluctantly decides to help Karen with Sam, and Niska receives a mysterious message.
Humans is set in a parallel present where the latest must-have gadget for any busy family is a 'Synth' - a highly-developed robotic servant eerily similar to its live counterpart. In the hope of transforming the way they live, one strained suburban family purchases a refurbished synth only to discover that sharing life with a machine has far-reaching and chilling consequences.
Humans - Series 3, Episode 3 Synopsis and Schedule