Why are so many planes falling from the sky? Why are two ex-CIA agents training terrorists in the Yemeni desert? Why is a religious cult transferring millions of dollars to bank accounts around the world? Are these events connected? If they are, is this the mother of all conspiracies? Can MI6 analyst Sam Green, desperate to establish why her only surviving relative died in the latest plane crash, put aside her grief and make sense of it all? Or is the clock ticking just too quickly even for her?