Ciphers, Bush Theatre
Unlike television, with its series of Spooks and Homeland, theatre has more or less ignored the secret services. For reasons of snobbery (thrillers are somehow beneath the interest of young playwrights) or because of playwriting clichés (write what you know is difficult in the secret world, where no one really knows what's going on), this is a relatively unexplored area. But in the era of wiki-leaks and Edward Snowd…