1Q84 by Haruki Murakami. From eurya

One review described 1Q84 as a "complex and surreal narrative" which "shifts back and forth between tales of two characters, a man and a woman, who are searching for each other." It tackles themes of murder, history, cult religion, violence, family ties and love.
The title is a play on the Japanese pronunciation of the year 1984. The letter Q and the Japanese number 9 are homophones, which are often used in Japanese wordplay.