The 'Geisters — David Nickle

From the award-winning “heir to the mantle of Stephen King”: A supernatural entity draws a woman into a terrifying nightmare (The National Post).
 
Some little girls have imaginary friends. Ann LeSage had the Insect. A violent poltergeist that tore a murderous path through her family, it wasn't imaginary -- and it definitely wasn't a friend.
 
Now Ann is all grown up -- and so is the Insect. And Ann's upcoming marriage to a mysterious young lawyer is about to open up a whole new world to both of them, rife with secrets and laced with traps. Soon, Ann will find herself in a perverse battle against a group of men who want to wrest control of the Insect from her. What they don't know is, if you play with the Insect, you're sure to get stung . . .
 
“Few writers do psychosexual horror as well as Toronto's David Nickle, and with The 'Geisters he's back with another tale of voluptuous terror and the supernatural.” -- Toronto Star
 
“This is a book that buzzes in your ears, climbs your crawling skin with multiple barbed feet, feeling with exquisitely sensitive antennae for the next new and terrible revelation.” -- The National Post
 
“[The 'Geisters] doesn't just explore the attractiveness of terror -- it embodies it in a narrative that demands (excites even as it repels) your attention. It's a(nother) strong novel by one of the best, most interesting horror writers working today.” -- Bookgasm