I have read few novels, but I have not had one captivate me the way Blood Sugar did. 

I grew to love Ruby Simon very quickly while hating the actions she has committed. While I did hate them, I did not want her to serve time for any of them! Ruby convinced me in her justification of why she did if.
I find it kinda ironic that Ruby is a psychologist yet

does not see herself as one that may suffer from a mental health condition herself

. However, her career definitely served her well in her own therapy sessions and police interrogations. What do to say, what not to say.
I loved Ruby’s love story, so my heart nearly broke reading about

  her husband passing and her challenges with that

. Rothschild outdid herself with Ruby’s character!
The organization of this book is superb.. she brings characters in and out of the plot line seamlessly!! For example,

Roman returning after his betrayal

! So many great characters! 
There is no huge plot twist, but little twist here and there that keep you wanting more. 
If you like the Netflix series, You, (which I need to read the series) you will like this book! I highly recommend this book!! I really enjoyed it!!