I LOVE this book. And Neil Gaiman. He's a genius. I don't like all fantasy books, but his writing is superb and his storylines a great - read American Gods, if you don't believe me.
Young Tristran Thorne promises to bring a fallen star to the woman he loves. Thing is, the fallen star landed in Fairie, on the other side of the wall. So Tristran goes on an adventure and finds that the star is not a piece of rock but a person. Together they travel through Fairie - through a strange and dangerous world - and come out of the journey different people.
It's a fairytale for adults - Not for kids as there are some scary things that happen and because of "one rude word in incredibly small type"- these are Neil Gaiman's own words, there is an interview with him at the end of the book. :-)
I give it 5 stars and can't wait to read something of his again.