Dark Detour - Harry Potter Time-Travel Fic

Harry Potter - Commander, Vanguard, and Weapon of Mass Destruction - gets sent back in time and promptly sets off a chain of events that will engulf the entirety of the magical world in a shadowy war. Join Fate's favorite chew toy as he bulls his way through an achingly familiar yet divergent timeline with his magical might. All the while becoming ever more a pawn in the games of Greater Powers.Alt. Summary: What do you get when you take a battle-hardened Harry Potter from a much darker version of canon and put him in a timeline where raw magical power is meaningless before political cunning and world-spanning underworld connections? Where Voldemort and Dumbledore are essentially bit players unknowingly dancing to the tune of an honest to god shadowy cabal?