Touch the Horizon by Iris Johansen

With a madcap's bravado and a gypsy's soul, Billie Callahan had escaped from wild situations before -- but when a sandstorm gathered around her in the Sedikhan desert, she felt like Pauline in silent-film peril. Suddenly through the shifting sands rose a dashing prince on a black stallion, racing to rescue her from premature burial in a sandy tomb! Was what she saw merely a seductive mirage conjured up by a lively imagination? No, the mystery man in the white burnoose was real! And he sent her spinning off the edge of the world, toward a passionate destiny her heart had secretly dreamed....

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