Black House by Stephen King & Peter Straub

French Landing, Wisconsin. A comfortable, solid middle-American town inhabited by comfortable, solid middle-Americans... and a serial killer.

Three children have been lost - taken by a monster with a taste for child's flesh nicknamed 'The Fisherman' after a legendary murderer. It's all way beyond the experience of the local police, whose only hope lies with ex-detective Jack Sawyer, the man who cracked their last case for them. But, plagued by visions of another world, Jack has retired to this rural retreat precisely to avoid such horrors - and, having recognized the touch of madness on this case, he's keeping well ...