Spy Story — Len Deighton

A Russian admiral prefers defection to death . . . a beautiful blonde does custom-tailoring for cadavers ... a London computer center plays at macabre war games . . . a cocky colonel in the American Marines takes over a British intelligence caper ... and an insubordinate English spy is caught in a brutal, devious East-West conspiracy that comes to its chilling climax on the snow-swept Arctic ice.