Best-selling author Simon Morden draws upon his expertise as a bona fide rocket scientist to deliver mindbending science fiction. In Theories of Flight, Petrovich is the guardian of several secrets. For starters, he knows how to make anti-gravity. And if that’s not impressive enough, he also knows which secret server farm hides a sentient computer program - the same one that nearly wiped out the Metrozone. Now someone wants to kill Petrovich - and doesn’t seem to care what is destroyed in the process.