So icy it's glacial, Tinker Tailor Soldier Spy is released this week on DVD and Blu Ray and we have two copies to give away.
In the bleak days of the Cold War, espionage veteran George Smiley is forced from semi-retirement to uncover a Soviet agent within MI6's echelons. What follows is a maze of cross and double cross, bluff and double bluff, as Smiley tracks down his quarry.
As ever with our competitions, this one is a doddle to enter - all you need to do is follow our twitterfeed (@lostintheplex) and retweet our competition message. Click through to the story and leave a comment if you want to draw our attention to you a little more.
Best of luck.