Humans is an unexpectedly great show. The reason for this is that it's understated in the technology an emphasizes the humanity. The cast are all from UK and mostly unknown and it allows us to get to know the characters more. Gemma Chan who plays Anita/Mya led me to this series via her Twitter. I first saw her in Jack Ryan: Shadow Recruit.
This series is dark and brooding. It raises more questions than it answers with the interaction between the Artificial Intelligence (AI) Synths and the Humans who "employ" them to do ordinary household tasks.
The origins of the core group of Synths is a mystery that is weave through the course of this series. There is some limited action, violence and beneath all of that big question about the ghost in the machine. This may be the best follow-up on ideas of sentient robots first presented since Blade Runner.