It's the story of a depressed, out of work school teacher who kidnaps the son of his ex-girlfriend. It's divided into 7 distinct parts, with a different narrator for each part - the kidnapper's psychologist, the mum (ex-girlfriend), the dad, the kidnapper himself, the prostitute who is sleeping with both the dad and the kidnapper, etc.
The relationships are very complex and no one covers themselves in glory. A little bit more of the full story comes out with each narrator.
We all thought it was a blinding good read, and was good for a book club discussion because it is not a clear "'Oh it was totally his fault"