It's the first book I read by Ruth Ware and won't surely be the last.
I started it at nighttime at my house in the country I couldn't put it down but after a while I had to switch to another books as my setting reflected those of the book and I was quite scared.
It's a creepy, engrossing and well written books that somehow reminded me of The Turn of the Screw.
The plot flows without issue and you cannot help feeling involved in the plot and feeling what Rowan is feeling.
It was a great read, a book I couldn't put down and found it highly entertaining.
I loved the description of the high tech house even and I found it well described even if a bit on the sci-fi side (I work in a high tech company so I know what IOT can do at the moment).
I think that the house is the main characters, fascinating and terrifying at the same time. The other characters are well written and fleshed out even if they're not always likeable.
A very good book, highly recommended.
Many thanks to the publisher and Netgalley for this ARC, all opinions are mine.