Ok! The next book!

Actually, the next book shall be Atmospheric Disturbances by Rivka Galchen - suggested by our own K.H. It looks really interesting:

Imagine what it might be like to realize that the person you love is, in fact, not the person you love but a doppelgänger: or, what Leo Liebenstein coolly terms a "simulacrum" of his wife Rema at the outset of Atmospheric Disturbances. David Byrne's infamous cry that "this is not my beautiful wife" seems the most likely response, but Leo's reaction to this sea change takes unpredictable and dazzlingly plotted turns in the story that follows.