Once you cross its threshold, Harrow will never let you go. Claiming his inheritance, a young man unlocks long-buried secrets of an occultist’s dark mansion, awakening a nest of hungry ghosts in this spine-tingling supernatural horror novel of the house of infinite hauntings. For fans of haunted houses and ghost stories. Note: The Harrow series consists of several books set in or around the haunted estate in the Hudson Valley. Each Harrow story can be read out-of-order because the main continuing character is the dark mansion itself or those people who have or will touch it.

Felix Allsey is a travel writer with a keen eye for the paranormal, and he's carved out a unique, if only slightly lucrative, niche for himself in nonfiction; he writes travelogues of the country's most haunted places, after haunting them himself. When he convinces the owner of the infamous Rotterdam Mansion to let him stay on the premises for two weeks, he believes he's finally found the location that will bring him a bestseller. As with his other gigs, he sets rules -- no leaving the house for any reason, refrain from outside contact, and sleep during the day. When Thomas Ruth, Felix's oldest friend and fellow horror film obsessive, joins him on the project, the two dance around a recent and unspeakably painful rough-patch in their friendship, but eventually fall into their old rhythms of dark humor and movie trivia. That's when things start going -- screams from upstairs, figures in the thresholds, and more than what should be in any basement. Felix realizes the book he's writing, and his very state of mind, is tilting from nonfiction into all out horror, and the shocking climax answers a question that's been staring these men in the face: In Rotter House, who's haunting who?

In a world where the dead can wake and walk among us, what is truly real? Roos Beckman has a spirit companion only she can see. Ruth—strange, corpse-like, and dead for centuries—is the only good thing in Roos’ life, which is filled with sordid backroom séances organized by her mother. That is, until wealthy young widow Agnes Knoop attends one of these séances and asks Roos to come live with her at the crumbling estate she inherited upon the death of her husband. The manor is unsettling, but the attraction between Roos and Agnes is palpable. So how does someone end up dead? Roos is caught red-handed, but she claims a spirit is the culprit. Doctor Montague, a psychologist tasked with finding out whether Roos can be considered mentally fit to stand trial, suspects she’s created an elaborate fantasy to protect her from what really happened. But Roos knows spirits are real; she's loved one of them. She'll have to prove her innocence and her sanity, or lose everything.