The Assistant by S K Tremayne

 It's nearly 3am and I'm awake because I couldn't put this book down! Wow!! The Assistant in the book is one of the Alexa Echo or Google Home devices that so many of us have around our houses. But what if the device goes rogue and starts learning from us. And what happens if someone has a very real, very serious grudge against you.

They could start to use the tech all around you to make you feel you are going mad, and to convince everyone else that you are. What if you already had a family history of mental illness? 

Omg! One of the most creepy and upsetting stories, but with a serious compulsion that will make you want to binge read it to the end.