VisibilityIn 1950s London, an MI 5 outcast stumbles upon a secret that will change the world if he can stay alive long enough to tell it. A page turner for fans of Enigma from the bestselling author of Messiah. London, 1952. As the fog rolls in, the chase begins A stranger's approach offering highly sensitive information seemed routine to an ex spy turned policeman. But when a body turns up instead of state secrets, Detective Inspector Herbert Smith finds