There are three distinct parts to this story, following a prologue that is quite chilling. The story starts with Levan Lamarr about to die of cancer before his wife Mira is to give birth to their child. Then he is offered help by Dr Jonah Salter, who speaks to them through an android called Eve, who happens to have Jonah's face. Jonah will pay Lev and Mira $5 million if he consents to an attempt to cure him, even though the procedure has always failed in the past. Since Mira would be financially sound, Lev consents, and is taken to the lab in a "crystal ball transporter" that is invisible to outsiders, which is achieved by passing the light around it. This is physically plausible, and experiments have made this work on small objects. It flies with "gravitationally repulsive medium", or antigravity, while the propulsion is through some sort of microwaves, possibly a bit like a cavity resonator that was claimed to offer thrust recently, but seems to disobey the laws of conservation of momentum. The science is ambitious and mainly based on a "many worlds" interpretation of quantum mechanics, but don't worry; you do not have to understand it. The cure is also ambitious. The body is put in an entangler, which creates a massive quantum event and the body is split in two, in two universes. At this point, nannites in the bodies resculpt the bodies, thus getting the cure. Why you need two bodies for the cure is not clear, at least to me, although it is necessary for the rest of the story, which then proceeds in two universes, at least for a while. Nair also managed to have one Jonah cross over from presumably a third Universe to . . . Mustn't spoil.
In terms of an imaginative scientific background, this is superb, although do not take the science as fact. It obeys its own rules consistently, but they are not the laws of physics as we know them. The descriptions are detailed and very clear, the conversations natural, although there are some fairly long explanations, and the plot quite complex with some sociological things to think about. Nair is apparently interested in philosophy and mysticism, and it shows the the variation in things to think about. This is a book that has been written from the heart, and while not really a book to skim, if you want something with more substance, this is well worth considering. I have not seen very many books quite so complex, and that is the basis of my grading. This is quite an achievement, but it is not for everybody.