This is a rare pleasure of a film - one that is prepared to treat its viewers intelligently and tell a war-time story without explosives and histrionics and without falsifying history to glorify the Americans. It is based on the best-selling novel by Robert Harris whose previous work `Fatherland' suffered so badly when translated to the screen. Here he has a decent screenplay from Tom Stoppard, assured direction from Michael Apsted, and three fine performances by British actors.

Dougray Scott, in a very different role from his `Mission Impossible 2' outing, has lost weight to portray brilliant, but tortured, code-breaker Tom Jericho at Britain's war-time Bletchley Park; Kate Winslet put on weight (she was pregnant at the time) for a performance far removed from `Titantic' as the frumpy, but clever, Hester; and Jeremy Northam is excellent as the sardonic secret service agent Wigram who knows far more than he is prepared to reveal.