Desert Knights: Bodyguard SheikSheik's Captive (Harlequin Romantic Suspense #1661)

Bodyguard Sheik by Linda Conrad

Expert marksman Morgan Bell is one of the best in the world. She agreed to one last assignment, never expecting to find sexy Sheik Karin Kadir heating up the cold desert nights. It leaves her longing for more… much more than his protecting her life.

Sheik's Captive by Loreth Anne White

Kathleen Flaherty's desert search for her sister leads her into captivity by a terrorist cell. Her beauty doesn't go unnoticed by her captor, Sayeed Ali. Working undercover for the FBI, Sayeed never counted on discovering love in a land as wild and as untamed as his captive's heart. Will he be able to save her and her sister in time?