An alien from a vastly more advanced distant civilisation is turned into an exact outward copy of a leading human mathematician at Cambridge University, whom the aliens had neatly and coolly murdered because he was on the point of a mathematical discovery which would have revolutionised human civilisation and led to this violent, unpredictable, retarded species gaining powers far beyond what it could handle. His task is to impersonate the dead Professor while he deletes all records of his discovery, including people he may have told about it, starting with his wife and son.
Things start going wrong immediately: his knowledge of human culture is very incomplete, so he doesn’t understand why wandering naked down a motorway at night may lead to what seems a rather extreme response and a brief acquaintance with other people who claim to be aliens.
He deletes one academic colleague. Then something else goes wrong. He starts becoming fond of his supposed wife and child. The rest of the book works out his dilemma.
At least since Montesquieu wrote about imaginary Persians visiting Europe, perhaps since some Roman writings achieving seeing something of the Romans from the viewpoint of conquered tribes, people have used very different strangers as a way of seeing their own culture anew. Some of the best Science Fiction now does this with aliens. The puzzlement and investigations of Matt Haig’s Vonnadorian do help us see ourselves more clearly. This is particularly so because the Vonnadorian culture – maths based, with little individuality and with death having long been banished, is so different from ours. His hero’s problem is that he starts feeling as human as Vonnadorian – an experience some people who are classed as terrestrial aliens, immigrants or refugees may relate to.
The whole thing is very well done – well-written, well-plotted, oddly credible.
In a postscript Matt Haig confides that the roots of this story are in a period of his own life when he was subject to panic attacks and human society and world seemed about as odd to him as they do to his hero at the start.
This is just the best book I’ve read for a long time.