I will begin by saying this certainly does not read like a debut novel. From page one, it reads as though a seasoned author had put this together.

Charlie (Charlotte) and Grace became friends when they met in school. They say that opposites attract, and in this case, it was so true. Charlie was outgoing,friendly, and willing to do almost anything for a bit of fun. Grace is quieter, an introvert, but a willing follower of Charlie.

The book takes you back and forth between NOW and THEN, as the girls were growing up. Around their 18th birthdays, Charlie ups and leaves. She says no good-byes other than to tell Grace .. I am so sorry. Please forgive me. But what is she sorry about? And forgive her for what? Five years later Charlie reappears but before they can talk, Charlie falls dead.

Grace's dad walked out of the home when she was very young, her mother abandoned her to her grandparents. The loss of Charlie in her life tears her apart.

Anna appears in Grace's life .... she states that Charlie was her half-sister and Grace gladly welcomes her into their home. And then strange things start happening. Small accidents .. like hazelnut in her coffee when she's very allergic to nuts. Malicious notes left for her. Her car is keyed. Her live-in boyfriend, Dan, has become distant. And Anna moves in.

All of a sudden, the friend has become cumbersome. She's always saying things that make Grace feel insecure and she's planting ideas that her boyfriend is cheating. And now her home has been set afire with her in it.

Is Anna the culprit? And why would she do these things? Is she even Charlie' sister?

There are many twists and turns that keep the pages turning. I love the way the past and present are written. They are easy chapters to read and all are told in Grace's voice. The characters are well described, especially as most of us have had that one great childhood best friend. The reader can imagine .. and wonder....

For anyone who likes psychological thrillers, I highly recommend this one. This one will stick to you for a long time....

Many thanks to the author / Grand Central Publishing / NetGalley who provided a digital copy of this Psychological Thriller. Opinions expressed here are unbiased and entirely my own.

I did something terrible Grace. I hope you can forgive me...
The Sister is about a girl named Grace trying to find her way after the devastating loss of her best friend Charlie.  Everything is falling apart in Graces life including her marriage when she opens the letter from her memory box they made together as kids, and Grace begins to realize there is so much more to her best friend than she could have ever imagined. Grace is determined to find answers including Charlie's long lost father. When she and Dan put up an ad trying to find Charlie's father, what they get instead is Anna. Anna is Charlie's long lost step sister...or is she? As strange things begin happening and Grace gets closer to the truth, what will she learn about her best friend and her family? 
The Sister is a perfect example of a psychological thriller. A story you get absolutely lost in, characters you feel, and shocks and twists at every turn. No matter how much you think you know what's going on you don't know anything until she reveals it.  We truly enjoy her books and can't wait for the next one.