You are not alone by Greer Hendricks and Sarah Pekkanen

You probably know someone like Shay Miller.
She wants to find love, but it eludes her.
She wants to be fulfilled, but her job is a dead end.
She wants to belong, but her life is so isolated.

You probably don’t know anyone like the Moore sisters.
They have an unbreakable circle of friends.
They live the most glamorous life.
They always get what they desire.

Shay thinks she wants their life.
But what they really want is hers.

My thoughts:
This was my first thriller by these authors and now I understand why their books have been so successful. The writing was absolutely addictive and you will leave aside all your doubts and just go for this compulsive thrilling ride.
Shay Miller has been recently made redundant and is looking for another permanent job. She is sharing an apartment with a guy who at some point might have become something more than just a flatmate, but never did. We've all been there- feeling that your life is not going anywhere or at least anywhere you want it to go to and you know you need to make changes to turn it it into something else. One Sunday morning Shay is waiting for a train on a subway platform. She is not alone, because there is a dodgy man who keeps staring at her. Shay is scared, but then the man leaves and Shay notices that there is somebody else. A young woman who suddenly jumps in front of the coming train.
When shock of the event begins to wear off, Shay realises two things: she cannot take or even come close to the subway anymore, and she wants to know more about Amanda's life (this was the name of the woman whose suicide Shay witnessed). She finds her address and goes to her memorial service. Shay wants to understand what happened, get a rational explanation that would stave off her fear of being lonely and driven to the most desperate decisions of them all.
Shay doesn't know this, but she is also being observed by the Moore sisters. Before Amanda jumped, she dropped her golden necklace which Shay in her shock and dismay picked up and put in her pocket. Little did she know that it had a tracking device, which will lead Amda's mysterious 'friends' into Shay's life.
The plot was full of twists and kept my attention all way through. It is possible to guess and predict quite a lot, so instead of unexpected twists and surprises, you get confirmations of the theories your  imagination will inevitably keep churning out. The pace was just right- fast enough to keep you turning pages compulsively, but there was also enough space for building characters and providing motivations. Shay's obsession with statistics was something that really made her memorable for me.
Recommended for all fans of fast-paced psychological thrillers and, of course, all fans of Greer Hedricks and Sarah Pekkanen, superb masters of creating dark and twisty plots.

Thank you to Edelweiss and St.Martin's Press for the ARC provided in exchange for an honest opinion.