When aspiring artist Anna de' Medici Rossi inherits her family's opulent villa in Tuscany, she returns to a place steeped in tragedy and mystery. Living there as a child, Anna suffered from debilitating night terrors, frequently waking to find that she had wandered far from bed. During one such episode when Anna was twelve, her mother took a fatal tumble down the stairs. Vittoria's death was officially ruled an accident, but an heirloom ruby-and-diamond necklace was missing from her bruised neck. Whispered suspicions suggest that Anna pushed her mother and stole the precious jewels. Anna, remembering little from that night, is afraid they're right. But if that's true, then what became of the necklace, which has long been associated with legends of a family curse?

Now back in Tuscany after sixteen years, Anna is shunned by the local townspeople as a killer who escaped justice, while only a few distant relatives and an old childhood friend offer solace. As she explores the sprawling villa, Anna uncovers hidden rooms and memories shrouded in fog, reigniting the violent night terrors of her youth. Plagued by unsettling visions and eerie occurrences, she questions her sanity and embarks on a harrowing journey to unravel the truth of her past. As her search deepens, she confronts shocking revelations that expose her to dangers she never anticipated.