The Only One Left by Riley Sager is a gothic psychological thriller set in a decaying cliffside mansion in coastal Maine. The story follows Kit McDeere, a home-health aide assigned to care for Lenora Hope, a woman accused of brutally murdering her entire family decades earlier. Lenora, now mute and confined to a wheelchair, communicates only by typing messages on a typewriter, slowly revealing her version of the infamous night. As Kit reads Lenora’s unfolding confession, she becomes entangled in a web of secrets, lies, and long-buried truths. The novel builds a tense atmosphere through isolation, eerie settings, and shocking twists, forcing readers to question who can be trusted and whether the past is ever truly over.