Three children have become adults since a phone call with Jo Rowling, containing one small clue, persuaded me that there was more to Snape than an unchanging costume, and that even though only three of the books were out at that time, she held the entire massive but delicate narrative in the surest of hands.
Alan RickmanI knew with Snape I was working as a double agent, as it turns out, and a very good one at that.
Alan Rickman