The TV quiz show Mastermind will be airing three celebrity editions later this year, and Home Secretary David Blunkett will appear on one of them. His chosen subject? The Harry Potter novels, of course.
Comedy actor and director Stephen Fry and EastEnders' Shaun Williamson will also feature among the guests.
Fry will answer questions on Sherlock Holmes, while Williamson - who plays Barry Evans in the soap - will specialise in questions on actor Richard Burton.
As usual, contestants in the famous black chair will face a round of general knowledge questions in addition to their chosen subjects.