'When people say that "the children are the future" they aren't talking about me.' Jonathan Murray, aged 12, Evanston, Virginia

When Jonathan and Shelley are summoned to work for The League of Unexceptional Children they're more than a little bit surprised. Average in every single way, they've never been singled out for anything in their lives . . . scrap that, they've never even been noticed.

But that's exactly what the League is after. Because if you're truly forgettable, you're perfect for acts of espionage - as Jonathan and Shelley are about to find out.