The Agent's Surrender (Harlequin Romantic Suspense Book 1821)

Rival agents uncover a monstrous conspiracy 

 

From the moment they met, sparks had flown…and not the good kind. Agent Jane Fallon would rather chew nails than work with arrogant—and much too good-looking—Holden Archangelo. But, convinced his brother was no traitor, Holden had Jane's investigation reopened. And now Jane is forced to partner with him. 

 

As new leads come to light, Jane's certainty about the case is shaken. But the assassin's bullet whizzing past her head convinces her they are onto something. Jane's determined to keep things professional, but as the danger around them intensifies, so does the fierce attraction they try so hard to deny….