Harry Potter and the House of Caerleon (смешанная)

Two very small, insignificant words: What and If. 'He did What' 'If only I could'. On their own, they don't really stand out, but, put together: What if...'What if a curious Muggle-born asked the Goblins a Question' or, 'What if Petunia Dursley and Lily Potter reconnected before the younger died'