The Key to Rebecca

He is known to the Germans as "Sphinx" but to others as Alex Wolff, a European businessman. He arrives suddenly in Cairo from out of the desert, armed with a radio set, a lethal blade, and a copy of Daphne du Maurier's Rebecca - a ruthless man with a burning conviction that he will win at all costs.
The stakes are high, for the survival of the British campaign in North Africa is in the balance. Only Major William Vandam, an Intelligence officer, and a beautiful courtesan named Elene can put an end to Wolff's brilliant clandestine reports of British troop movements and strategic plans.

As Rommel's troops come nearer to victory, Vandam pursues Wolff across the merciless desert to a terrifying life-or-death confrontation between the two adversaries.