Voldemort never killed Harry, instead he killed his parents and kidnapped Harry to raise as his own son against Dumbledore and the light. Dark/Slytherin Harry. Eventual M rating.

There is a reason why everyone wants a piece of Harry Potter; the twelve-year-old is considered a prodigy by the Wizarding World, after all. But Harry has chosen his side. The Headmaster and Minister of Magic can try as they might - Harry is a dark wizard. Now...if only he could get in touch with the elusive, recently resurrected Voldemort. Sequel to Enveloped in the Darkness.