This series, published in the UK by Gollancz and in the US by Del Rey, is about the possibilities of human evolution. The first novel Coalescent (2003) is set in the present day, with the hero George Poole uncovering a human 'hive' in the catacombs of Rome. Exultant (2004) is set 25,000 years in the future, when humanity is locked in a galactic war. Transcendent (2005) follows up both the previous books, as George Poole's nephew Michael deals with climate-change disasters in the near future, amid an intervention from a far future beyond the Galaxy war. Resplendent (2006) is a 'fix-up' of short fiction (up to novella length) set against the background of this future history.