Really good “cabin read” book - realizing my rating scale is a blend of how engaging it is for me to read blended with how much the book makes me think and what I learn. So for those reasons this is no higher than a 3. I breezed through it and it was a really enjoyable psychological thriller.
The part about Laura‘s anxiety meds felt unnecessary and done poorly - not that it was included but felt it was written in a non-empathetic way.