SLADE HOUSE, by David Mitchell. Last summer, author David Mitchell released a story in 280 installments on Twitter. Set in the same universe as his novel "The Bone Clocks," it forms the first part of this new tale about a mysterious British house, inhabited by a strange brother and sister who invite a stranger in every nine years. These guests don't want to leave -- and then they find they can't. (Random House $26)

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GHOSTLY: A Collection of Ghost Stories, edited by Audrey Niffenegger. The author of "The Time Traveler's Wife" has assembled 16 supernatural stories both classic (Edgar Allan Poe, Edith Wharton, Saki) and contemporary (Neil Gaiman, Kelly Link) and illustrated them with her own line drawings. The 16 were chosen, she writes, for their "domestic ghosts . . . haunting their own families, friends, or small objects." (Scribner, $28)

THE RIM OF MORNING: Two Tales of Cosmic Horror, by William Sloane. This volume comprises two unusual novellas, "To Walk the Night" and "The Edge of Running Water," written in the 1930s by a mostly forgotten publisher and editor in his spare time. Stephen King, in his introduction, argues they are genre-defying horror tales, with elements of science fiction and mystery, that are "long overdue" for rediscovery. (New York Review Books, $17.95 paper)