I'll tell you off the bat that if you're looking for another Time Traveler's Wife, this ain't it. I'm not referring to the quality of the writing. You know what, actually I'm mystified by this book. It's the story of two sets of twins, one estranged and one symbiotic; and the residents of the building where three of the four twins lived or live. Pretty much no one in the story is sympathetic, and at least one of them is downright horrible. There's sort of a side story about a guy with debilitating OCD. Because I'm so baffled by a writer I previously so enjoyed, I'm choosing to believe that there are deeper meanings to everything that I'm just not getting. Otherwise, I just didn't care for this book. A fair amount.
Aside from the twin thing, themes and elements include identity, love, loss, ghosts, and cemeteries. It's set mostly in London.
Please, someone who loved The Time Traveler's Wife and also liked Her Fearful Symmetry, tell me what's up!