Zahir. Paulo Coelho. 2006.

It begins with a glimpse or a passing thought. It ends in obsession. One day a renowned author discovers that his wife, a war correspondent, has disappeared leaving no trace. Was she kidnapped, blackmailed, or simply bored with their marriage? His search for her - and for the truth of his own life - takes him from South America to Spain, France, Croatia and, eventually, the bleakly beautiful landscape of Central Asia. More than that, it leads him into a new understanding of the nature of love, the power of destiny and what it really means to follow your heart.