In this novel the multiverse is real (are real?) and the protagonist (and others) can visit these other realities which include other versions of himself. One would expect a novel based on quantum entanglement to get confusing and this one did. (There were moments in the story that reminded me of Philip Jose Farmer’s Riverworld series.) If you’ve ever pondered what you life would have been like if you had taken that other fork in the road, you might enjoy this novel. I found it well written but disturbing. I was eager to get to the end. (Amazon)