BLACK CIPHER by Payne Harrison - SIGNED FIRST EDITION BOOK

Secluded in the quiet Gloucestershire township of Cheltenham is the hypersecret codebreaking and signals intelligence enclave of the British spy machine. Known as Government Communications Headquarters, it is home to a small army of eavesdroppers, linguists, and codebreakers who secretly probe the airwaves for the defense of the realm. Within this high-tech fortress is a man of great mystery, urbanity, and elan, whose powers in the field of cryptanalysis are nothing short of legendary. His name is Faisal Shaikh, and when an unusual encrypted message crosses his desk, it is like a siren's song to his codebreaking skills. Calling upon all of this knowledge and intuition, Faisal finally unlocks its secrets, and thereby casts himself as a man who knows too much in the eyes of a powerful, mysterious clique at the highest levels of the British government.