Traitors' Gate — Dennis Wheatley

In the summer of 1942, Hungary was not yet embroiled in the war. While in Budapest, Gregory Sallust, British secret agent, lived in a pre-war atmosphere of love and laughter. But when his mission gets him involved with von Ribbentrop's beautiful Hungarian mistress, the laughter is silenced by fear as he desperately struggles to save them both...

Traitors' Gate is part of Wheatley's bestselling espionage series starring Gregory Sallust, one of the most famous Secret Agents ever created and the inspiration for James Bond.