The first Metrozone novel Equations of Life
introduced the likeable, genius-physicist-cum-action-hero Sam Petrovitch. The novel was a hi-octane romp through a dystopian London, featuring many famous landmarks as you've never imagined them. 'Theories of Flight' runs almost directly on from the events of its predecessor, and is packed with the same fast action and one liners, that made volume one such an entertaining read.
The problem with second novels in this type of series, is that the author has revealed most of his best ideas in book 1. The characters are introduced, the bulk of the world building is done, and the intriguing premise on which the book is based has been spelled out. All this is true of 'ToF', and it does lack the fresh feeling of reading something very different, that so thrilled in 'EoL'. Still, one can't complain about an author sticking to a winning formula. The story is fast and strong; preposterous, yes, but certainly entertaining. Ideas fizz off the page; the amount of technical innovations does occasionally threaten to overwhelm, but Morden manages to hold it all together. By not over-explaining the technology in his novel the author keeps his plot moving fast.
In this volume Morden expands on Petrovitch's very personal moral code. This, combined with musings on the nature of advanced AI, give the novel some substance, without which it would be little more than a schlock gun-fest. 'Theories of Flight' is a worthy successor to 'EoL' and with several tantalising threads left untied volume 3 promises much. I'm sure Morden and Petrovitch will deliver.