The Sundial - Shirley Jackson

Before there was Hill House, there was the Halloran mansion of Jackson’s stunningly creepy fourth novel, The Sundial.

Aunt Fanny has always been somewhat peculiar. When the Halloran clan gathers at the family home for a funeral, no one is surprised when she wanders off into the secret garden. But then Aunt Fanny returns to report an astonishing vision of an apocalypse from which only the Hallorans and their hangers-on will be spared, and the family finds itself engulfed in growing madness, fear, and violence as they prepare for a terrible new world. For Aunt Fanny's long-dead father has given her the precise date of the final cataclysm!