The Girl on the Train, written by Paula Hawkins, is a gripping psychological thriller that will keep you on the edge of your seat. The story revolves around Rachel Watson, a troubled woman who becomes entangled in a missing person investigation. As Rachel tries to piece together the events surrounding the disappearance, she becomes increasingly unreliable due to her alcohol addiction and memory lapses. With its unreliable narrator and suspenseful plot, this book will keep you guessing until the shocking truth is revealed.