The Only One Left by Riley Sager is a fictional thriller that tells the tragic events of Lenora Hope’s past at Hope's End through her caregiver, Kit McDeer. Lenora is not the only one with a tragic past involving murder; Kit also has a mysterious story to tell. Throughout the book, more and more murders take place while Kit tries to uncover the secrets of the past and present. This book keeps readers interested by slowly revealing clues of Lenora’s past. There are many plot twists, and overall, it kept me interested while I read. I would rate this book a four out of five because I loved the plot and the mystery aspect, but I did find it slower in the beginning. You will enjoy this book if you love playing detective while reading mysterious stories.