It's summertime and insects are not the only thing flying in the London skies. Oliver and Danny Murray return in this explosive second in the series novel. When two C.I.A. agents appear in Oliver Murray's office, he knows nothing good could come from it. An American drone has gone missing and the agents believe the one of their own has taken it. The agent's name is Sara Parsons, also known as Fallen Angel. Maintaining her innocence, Angel tries to find the real thief, but when one of the agents sent to arrest her turns up dead in her flat, Oliver has a hard time believing her. With the help from his brother, Danny, Oliver betrays his own instincts and decides to help Angel find the true murderer and drone thief.