Zero Days

This one had me hooked from the off. It's fast paced, and the tension ramps up chapter by chapter.
It is glaringly obvious, by the midpoint, who is partly responsible the murder, but not who sanctioned it.
For diehard Ruth Ware fans, this is a must read.
If this is first time reading a Ruth Ware book, ignore the negative reviews, read it and make up your own mind.