I received an ARC of this book from NetGalley in exchange for my unbiased opinion. 
 In 1958, Eva is a student at Cambridge. While bicycling to class one morning, she encounters a small dog that won't get out of the way. The reactions to this have vastly different outcomes in her life. In version one, Eva swerves to avoid the dog and get a flat tire from a nail in the road. Jim happens to be along the road at the same time and offers to fix her tire; they spend the rest of the day talking. In version two, Eva barely misses the dog but is able to cycle on; she brushes off Jim's question asking if she is all right. In version three, Eva falls off her bike and twists her ankle. Jim is once again there to help her, though there are a couple other differences in this version as well. The Versions of Us follows Eva and Jim's lives over the next almost 60 years in each of these versions. 
 I enjoyed seeing how differently their lives played out based on that one event. It was, however, difficult at times to keep straight which characters were in which versions of the story. I appreciated the fact that all three versions were realistic. It wasn't all sunshine and roses in any of the versions, nor did any characters suddenly become a famous hero for stopping a terrorist attack or something. While I did like the story, I also found it easy to put down and not think about until picking it back up again.