Amy N. Kaplan

Harbinger of Terror is a psychological horror novel that descends into the places a woman has trained herself not to look. Natalie Marr, a Special Collections director at a midsize university, has reconnected with Declan Ashborne, a widowed attorney with a beautiful house and a life she is letting herself back into. But the city around them is counting bodies. A jogger on a quiet path. A woman walking home from a late shift.
A man behind a bar. A pattern the detectives can feel before they can name. And as Natalie's relationships deepen, the hours she cannot account for grow longer, the dreams that arrive in voices not her own grow louder, and the feeling that something else is moving through her life - patient, ancient, horrifying - becomes impossible to keep beneath the surface. The novel moves through obsession, possession, and the unmaking of a woman who has spent her life believing she was the most dangerous thing in her own house.
It asks what it means to be haunted by a thing that knows you better than you know yourself, and what is left of a woman when the door inside her finally opens. There are two men close enough to see. Neither of them knows yet what that costs.