Dumbledore Admits His Responsibility for Sirius's Death
Pages 825-826
Dumbledore confesses to Harry that it is his fault Sirius died. He explains that if he had been more open with Harry, Harry would have known about Lord Voldemort's manipulation. Dumbledore admits that his secrecy led to Sirius's involvement and death. Harry listens in stunned silence as Dumbledore takes responsibility for the tragic events.
