Yes, it took me two and a half months to finish this. I always find Nick Harkaway’s books dense, and I can’t race through them, but how I enjoy his convoluted, madcap, far too clever stories! Gnomon is a mystery, an adventure and a complex and confusing maze. Set in a near future of hyper-surveillance, it looks at what is important to self, to society, and what sacrifices are made to achieve the common good. I’ll miss it, now I have finished.