Domestic trailer of Tinker Tailor Soldier Spy.
There is a mole, right at the top of British intelligence. He's been there for years.
For 25 years we've been the only thing standing between Moscow and the third World War.
I'm retired. You're outside the family. You're well placed to look into this personnel. I'll do my utmost. I know that it is one of these man. All I want from you is one codename. Tinker, Tailor, Soldier, Spy.
I need you to do something. I only have to send you up into the lion's den. If you're caught... What the hell are you doing up here? Can't mention me.
I know who you are. I have something to trade. Something deep. She told me a secret. The mother of all secrets. She had information concerning a double agent. You have to assume they're watching you.
Things aren't always what they seem.
It has become so ugly.
We're not so very different you and I. We're both looking for the weaknesses in one another.