The Dark Oasis — Margaret Pargeter

She was victim of a man seeking revenge

Kurt d'Estier, a powerful sheikh, controlled the Martin family fortune. So when Colin Martin ran off with Kurt's fiancee, disaster threatened. Kurt needed pacifying, and Maxine, the family's secretary, was sent to Morocco to do it.

Unfortunately, Kurt immediately jumped to the conclusion that Maxine was Colin's promiscuous sister. Despite her protests, Maxine soon found herself on a desert trek, prisoner of the ruthless sheikh.

"None of you can escape reprisal," he warned, his eyes raking over her arrogantly. "And yours, cherie, will be most pleasantly fitting.... "

Hero: Kurt d'Estier
Heroine: Maxine Martin