Grandmaster A. E. van Vogt was one of the giants of the Golden Age of classic SF, the 1940s. Of his masterpieces, The World of Null-A is perhaps most influential. It was the first major trade SF hardcover ever, in 1949, and has been in print ever since. The careers of Philip K. Dick, Keith Laumer, Alfred Bester, Charles Harness, and Philip Jose Farmer were created or influenced by The World of Null-A. It is required reading for anyone who wishes to know the canon of SF classics.

And so John C. Wright was inspired to write a sequel to the two novels of Null-A (the second was The Players of Null-A). To do this, he trained himself to write in the pulp style and manner of van Vogt. So return again to the Null-A future, in which the man with two brains, Gilbert Gosseyn, now discovers his third brain and travels through heretofore unimaginable distances in space and in time to fend off the death of the Universe and the extermination of human life as humanity reaches the peak of evolution millions of years in the future.