Again the smile or snarl from his Master. “You were a traitor, were you not, Lord Vader?”
Vader’s breathing caught on the hook of sudden anger. “What did you say?”
“To the Jedi. To Padmé. To Obi-Wan. To all those you loved.”
His Master turned to look at him, his eyes reflecting the flames.
Vader didn’t know the answer his Master wanted to hear, so he simply answered the truth. “Yes”.
-Lords of the Sith by Paul S. Kemp