James Hogg 
Private Memoirs and Confessions of a Justified Sinner 

On the surface, this novel is a simple tale of a young man who encounters a shape-shifting devil, an early manifestation of a doppelganger, and the various misadventures that follow. This novel was perhaps the first post modern novel; it employs clustered narratives, self-reflexive point-of-view, unreliable narrators, and unsympathetic-protagonist. This is indeed a land mark novel.