Secret Soldier (Harlequin Intrigue Series)

A member of the elite Special Designation Defense Unit, Jack "Spike" Logan had only days to secretly recruit an academic lost in the sands of the Middle East. Dr. Abigail DiMatteo was key to the mission, and Spike would do anything for his country--even marry her to keep his cover.

Plagued by desert bandits and a scorching sexual attraction, Spike and Abigail had more than their hearts at stake. The bomb was still missing, its clock was ticking...and this marriage born out of desperation had taken an unexpectedly explosive turn for the passionate!