Death is in the Air (M)

What if Harry Potter was actually the son of Voldemort and Bellatrix? What if an Order of the Phoenix member infiltrated the manor and stole him? What would happen when Voldemort would learn as he was regaining his powers that he had tried to kill his son, not the Potters? And what about Bellatrix? How would Harry feel about really being Oberon Orion Slytherin?