I listened to an Audible.com version of this a while back. Young author interviews famous older author, who has written lots of books but never told her own story to anyone - until now. Very well done, but also very dark. The description on Goodreads.com sets it up well, better than the one on Amazon. Here's the link:
http://www.goodreads.com/book/show/40440.The_Thirteenth_Tale_A_Novel
And here's the quote from early in the book that got me hooked:
"All morning I struggled with the sensation of stray wisps of one world seeping through the cracks of another. Do you know the feeling when you start reading a new book before the membrane of the last one has had time to close behind you? You leave the previous book with ideas and themes -- characters even -- caught in the fibers of your clothes, and when you open the new book, they are still with you."