Too complicated for me!

After hearing about her Anne Brochet and his latest book on the radio, I was intrigued and I wanted to try to understand his approach.
His obsession was born Judaism seems you of the presence of mysterious neighbors during his childhood, is transferred to a Sylvia actress who is the character of the second part of the book. Sylvia Anne could it be? Sylvia is in Jerusalem to become ... she attends a group of "préconvertis" and is fascinated by the Wall.
Unquestionably a woman who seeks a breath ... but fails in this novel.