Marion Zimmer Bradley's 'The Brass Dragon'
While it's not leaping straight into my list of greatest neglected novels (though I would place her THE CATCH TRAP in that category), Marion Zimmer Bradley's The Brass Dragon was an excellent recent read. Its teenage lead has lost his memory at the opening, two rival fathers coming to claim him. He has no memory of either so goes on gut instinct as to which he follows home: one seems good, the other evil. The excellent premise, a boy moving into a family that claim him as their own even while he has no recollection of them whatsoever, is marvellously handled. It's a factor one finds in the lives of great mystics: they have a sense of their true family being in some other realm, their 'birth' family seeming an awkward fit.
The book shifts from horror mode into sci-fi with spaceships and aliens. Entertaining enough, but it's the first half that's terrific. A great addition to the fiction of displacement.