Prologue
The dark owl flew in the window at the Burrow. It carried a letter made of human skin tattooed with the message Voldemort so desperately needed to pass on. A red-headed figure stood waiting for it beside a dwindling fire. The owl dropped the note into the outstretched hands of a Weasley. He read the letter, then, it disintegrated in his hand. There was the sound of Mrs. Weasley coming down to make breakfast. He quickly took the owl and went upstairs to his room. He sat down and started chewing on his quill, then realized it was a bad habit and mentally slapped himself. His reply to Voldemort, a birthday note, seemed innocent enough, but was secretly sinister. He quickly tied the message to the owl's leg and with a whisper to the bird, sent it out into the dawn.
This is only a prologue. Sorry that it's so short but there be more…
Who is the traitor?