Enigma (15) If you're in the mood for an old-fashioned spy thriller, this is for you. Adapted by Tom Stoppard from Robert Harris's novel, and starring Dougray Scott, Kate Winslet and Saffron Burrows (right), it tells the story of a broken-hearted bright-spark who works as a codebreaker at Bletchley Park, and how he gets caught up in the attempts of the British Secret Service to hide information that might interfere with the war effort. Michael Apted, fresh from his stint directing the last James Bond movie, is in charge, and in fact he brings some of that experience to bear on this Forties setting. The period detail is good, and the performances are convincing. It's a very talkative movie - there's too much explaining - and sometimes believability is surrendered to melodrama. But it's fairly sound entertainment nonetheless.

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