He discovered that his father's best friend was the reason his parents were dead and that the same person is his Godfather.
Thirteen.
It is about Harry Potter and his friends Hemonie and Ron find out Harry Has a Godfather, Sirius Black. He broke out of askaban. Read the Book.
The third novel is mainly about Sirius Black, Harry's godfather, breaking out of Azkaban prison along with his relationship to Harry Potter. As he is considered an extremely dangerous criminal, the...
Professor McGongall wanted to see him because he fainted on the train.