I'm the dark Lord. And this is my heir

No one knew what was happening in the Potter house.
No one knew how a man with a white beard had slayed his former student as he had dueled the professor.
No one knew how the woman begged for her child to be spared.
No one knew when the old man said that it was for the greater good.
No one knew when the woman fell dead.
No one knew how the dark haired man appeared in the house.
No one knew when the man took the baby
No one knew how they vanished.
No one knew when the old man yelled in fury.
No one knew anything at all.