After years of questioning her sanity, Kat Delancey reluctantly returns to the old family manor as its legal owner, hoping desperately to silence the doubts in her mind and leave the home's tragic past behind her once and for all. But it turns out to be harder than she expected, and not just because of the estranged step-family waiting for her—because maybe Kat's mind was never playing tricks on her after all, and maybe the manor harbors a far more malevolent presence than she ever dreamed . . .