As one, the amiable smiles fell from James, Lily and Sirius' faces. Turning to Dumbledore, James spoke for all three, "You betrayed us."
Taken aback, the Headmaster stared.
"You failed to ensure Sirius had a trial. You placed my son with persons who were specifically eliminated from custody consideration in our wills. You repeatedly generated or allowed to flourish situations where my son was in mortal danger. By our count, Harry has been in mortal peril at least six times in the last three years, and that's just what he and Hermione told us about. I'm sure there is more. I'm also sure that you haven't told Harry about the prophecy, despite the repeated attempts on his life by Voldemort."
The icy, accusatory tone was so different from the jovial James Potter that most in the room had to check that it was James who was speaking and not his more mercurial wife.
Lily's eyes flashed, "If I find that my suspicions are true and my sister did abuse my son…I'm going to take it out on you, Albus."
James nearly smiled when he saw Dumbledore reflexively grab for his wand. Nearly smiled, but not in actuality.
"I'd just as soon kill you now, if I could," Sirius deadpanned. All the years of Azkaban stood in his dead grey eyes. Haunted and empty, Sirius Black stared at Dumbledore in a way reminiscent of a man who has nothing to lose and therefore has no fear.
"Three things have saved your life this day, Albus Dumbledore. First, I doubt I could defeat you in a duel. Despite your behaviour, you are still a mighty wizard. Second, you aren't important anymore. You may have insinuated yourself into my son's life, but that ends now. Expect to be relegated to your rightful place: Headmaster. Lastly," he turned form the old man as he took his wife's arm while shepherding his friend from the room. "Lastly, I've a son for whom I need to be an example. I don't want him to resort to violence to resolve difficulties." Glaring at the old man, the Earl of Richmond added, "No matter how satisfying that violence may be. I'll just have to take you apart legally. Expect my solicitor to call on you."
Sirius went through the door as James held it open. Lily moved to leave when Snape called out, "Lily…" He reached with one hand, but stopped short of the redheaded witch's shoulder.
Stopping, the witch replied without looking, "What do you want, Death Eater?"
James glared at the odious man, as he seemed to crumple from a physical blow. Snape's mouth moved twice before Lily left of the room, James following. Moving quickly down the steps, he heard his wife mutter, "I need my son. Let's get the hell out of here."