Switched (Harlequin Intrigue Series) by HelenKay Dimon

Description

For Aaron McBain, it was just another routine job, protecting his client at an office Christmas party. Until commandos stormed the place and took a hostage. But they had the wrong woman…the very woman Aaron had started dating—under a different cover.

Risa Peters couldn't convince the gunmen she was the wrong hostage, nor could she believe her so-called “tax attorney” boyfriend wrested her away. But as the threats against her escalated, Risa and Aaron found themselves trapped in the building in the midst of a deadly conspiracy. And only her sexy new protector—a man she hardly knew but already wanted—stood between her and a bullet.