The Sister: A psychological thriller with a brilliant twist you won't see coming

I did something terrible Grace. I hope you can forgive me

Grace hasn t been the same since the death of her best friend Charlie. She is haunted by Charlie s words the last time she saw her, and in a bid for answers, opens an old memory box of Charlie s. It soon becomes clear that there was a lot she didn t know about her best friend.

When Grace starts a campaign to find Charlie s father, Anna, a girl claiming to be Charlie s sister steps forward. For Grace, finding Anna is like finding a new family and soon Anna has made herself very comfortable in Grace and boyfriend Dan s home.

But something isn t right. Things disappear, Dan s acting strangely and Grace is sure that someone is following her. Is it all in Grace s mind? Or as she gets closer to discovering the truth about both Charlie and Anna, is Grace in terrible danger?

There was nothing she could have done to save Charlie Or was there?

A compelling, gripping psychological thriller perfect for fans of The Girl on the Train, I Let You Go and The Girl With No Past.