In the near future, humanoid servants called synths are the latest high-tech gadgets. But what happens when synths can think for themselves? Fighting to survive in a world that hates and fears them, the synth community starts to fracture, risking all hope for peace with humans. Cast includes Katherine Parkinson, Gemma Chan, and Tom Goodman-Hill. "The ultimate AI thought experiment" — The Atlantic. 8 episodes, 6 ½ hrs, 3 DVDs or 2 Blu-ray discs, SDH. Mature audiences.