The Only One Left is a riveting thriller that I literally did not put down until I finished the last page. Sager sets up an atmospheric and terrifying environment with Hope's End, a bloodstained mansion that seems like it's only a storm away from being swept into the sea. Kit is one of Sager's most endearing protagonists, she is caring yet obsessive and wants Lenora's story told out of a sense of shared camaraderie, as she was similarly disgraced for a death she did not intentionally cause. Sager reveals more twists and secrets as the novel continues, resulting in an ending as unexpected as it was far-fetched. Though I felt there were one too many twists in the epilogue of the novel, its engagement speaks for itself. I devoured it easily in the course of one night and was never tempted to tear myself away from the pages as the hours crept on. Recommended for readers looking for a thriller that will hold their attention and haunt them until they return to it.