Faerie Tale is a novel by Creator/RaymondEFeist, Published in 1988.
Screenwriter Phil Hastings and his wife Gloria move back to his hometown with his teenaged daughter Gabby and their twin sons Sean and Patrick, where he hopes to focus on his efforts as a novelist. Gabby is initially upset to be pulled away from California to the backwoods of upstate New York, but a handsome neighbor begins to change her mind, while Sean and Patrick are thrilled by the woodlot and wliderness nearby to explore. As the family settles into their new home, strange things begin to happen, and evidence piles up that the previous owner was involved in mysterious happenings. Now the pact that holds the Faerie Court in check is nearing its end, and unless the Hastings family can learn what's happening and how to renew it, they will be the first victims.
!!This book provides examples of:
* AdultFear: Patrick becomes horribly ill, and the doctors are mystified and unable to help
* ChangelingTale: Patrick is taken away by "the shining man" and replaced by a changeling. The family takes the false child to the hospital, and there is a chilling description of the changeling's behavior, and how modern medicine attempts to explain it (that his brain was damaged by fever, that they don't understand how his brain could look like it does under an MRI)
* TheFairFolk: Drive the plot. The good elves are dangerous and the evil ones are planning a [[KillAllHumans genocidal war]], and the Hastings' new home is at the center of it.
* KilledToUpholdTheMasquerade[[spoiler:this is subverted: the guy who figures out what's going on ''expects'' to be killed, but the AncientTradition people tell him not to be so melodramatic and give him LaserGuidedAmnesia instead]].