Sheba - Jack Higgins

The year is 1939. An American archaeologist named Gavin Kane is asked to help a woman search for her missing husband. When Kane follows the man's trail into the ruthless desert of Southern Arabia, he makes two shocking discoveries. One is the legendary Temple of Sheba, an ancient world as fantastic as King Solomon's mines. The other is a band of Nazi soldiers who plan to turn the sacred landmark into Hitler's secret stronghold..