The Haunting of Hill House by Shirley Jackson

The book is a chilling tale that revolves around a group of four individuals who decide to stay in a notoriously haunted mansion to conduct a paranormal investigation. The main character, a shy, reclusive woman with a troubled past, becomes increasingly unstable as she experiences terrifying phenomena and becomes obsessed with the house. As the supernatural events escalate, the lines between reality and imagination blur, leading to a shocking and tragic conclusion.

The 343rd greatest book of all time