Everything below is from the US publishers of Harry Potter, Scholastic's, summary about the book in a catalogue of their summer and autumn releases.

"I say to you all, once again - in the light of Lord Voldemort's return, we are only as strong as we are united, as weak as we are divided.

"Lord Voldemort's gift for spreading discord and enmity is very great. We can fight it only by showing an equally strong bond of friendship and trust."

So spoke Albus Dumbledore at the end of Harry Potter's fourth year at Hogwarts.

But as he enters his fifth year at wizard school, it seems those bonds have never been tested more.

Lord Voldemort's rise has opened a rift in the wizarding world between those who believe the truth about his return, and those who prefer to believe it's all madness and lies - just more trouble from Harry Potter.

Add this to a host of other worries for Harry...

• A Defence Against the Dark Arts teacher with a personality like poisoned honey
• A venomous, disgruntled house-elf
• Ron as Keeper of the Gryffindor Quidditch team
• And of course, what every student dreads: end-of-term Ordinary Wizarding Level exams.

And this door is somehow more terrifying than every other nightmare combined.