BBC’s ’80s-set spy thriller with a twist gets exciting first look at ‘thrilling and brilliant’ cast

Okay, so I’m playing this new game where I’m Martha Schmitt, an MI6 agent. It’s set in Berlin during the Cold War, and my job is basically to go undercover. The tricky part? I have to act totally normal around this new Stasi guy, Friedrich, who’s in charge of catching British spies. He’s a real threat, and keeping my cool around him is a major part of the gameplay!