‘Oh, I would never dream of assuming I know all Hogwarts’ secrets, Igor,’ said Dumbledore amicably.
Harry Potter and the Goblet of Fire
But how many of Hogwarts' secrets do you know, we wonder? Have a go at our latest quiz and be careful not to fall down a trick step.
If you fancy solving some more Hogwarts mysteries, why not try our 30-question ultimate Hogwarts quiz for an even bigger challenge?