I love Audrey Niffenegger. I was just as pleased with this book as I had been with The Time Traveler's Wife. Though the story deals with ghosts and a rather fantastical plot line, it didn't feel contrived or hard to believe. I really enjoyed this book. She did a good job of creating enough mystery around the plot line that I was hooked within the first few pages. I read the whole book in just a few days and found myself excited to get back to it. I felt as true sense of getting to know the characters and I wanted to see where their paths would take them.

The story centers on Julia and Valentina Poole, twin sisters who inherit their Aunt Elspeth's flat upon her death with the strange condition that they live there for a year and do not allow their parents to enter the apartment. They are thrust out of the life they know and are forced to start to think about the future.

Each main character in the plot has their own selfish tendencies as well as an obsession. These are the things that bring them all together and thread the plot as a cohesive whole. There is Martin, with his OCD so pervasive that he drives off his own wife; Julia, the twin who wants to be in charge and can't stand the thought of living a life different from that of her sister; Robert, who obsesses about his thesis, but can't find a way to make it whole and finds himself torn between love for two women; and Valentina, the weaker twin who knows inside what she wants but cannot break free of her domineering sister.

This is absolutely a book that I would recommend to other readers. I will certainly be reading it again. Though it wasn't as sweepingly romantic as The Time Traveler's Wife, I still found it enthralling and wonderful.