La Tela De Araña by Joseph Roth

An embittered former army officer in post–World War I Germany claws his way upward through nationalist conspiracies and paramilitary networks, using deception, informants, and violence to gain influence. Exploiting social chaos, resentment, and antisemitism, he becomes both manipulator and pawn amid shadowy alliances of industrialists, aristocrats, and secret police. The story traces his ruthless rise and moral decay, exposing how personal ambition and political extremism intertwine until the web of intrigue he spins tightens into his own undoing.