She Started It by Sian Gilbert

 

She Started It is addicting! Annabel, Esther, Tanya and Chloe has been best friends since childhood. They have drifted apart a bit as one does during adulthood but they are still in contact. Imagine their surprise when all four of them receive an all paid trip to an extravagant bachelorette party from Poppy. None of them have talked to Poppy in years in fact they all used to be friends with Poppy until they made her life a living hell via bullying. 

They decided to attend the bachelorette party because they are curious, it's free and they four of them get to see one another. They are beyond surprised when the find out upon arrival that the party is taking place on a remote island. 

Initially things seem okay between the group but then secrets they've all been keeping come out and things get dark. I love the twists that come out even though I could guess a few of them. This is a perfect book to read on this cold winter days/nights.