Betrayed — Rebecca York

To Trust...
Rockfort Security operative Shane Gallagher has been brought into S&D Systems to find a security leak. Confidential information has been stolen, and Shane suspects Elena Reyes, a systems analyst with the access and know-how to pull it off. As he finds excuses to get close to her, their attraction is too strong to ignore, but how can Shane trust the very woman he's investigating?

Or Not to Trust
Elena has spent her life proving herself, but now she's risking it all: everything she's worked for, and her growing feelings for Shane. Much as she wants to trust the devastatingly sexy, hard-as-nails investigator, she can't let herself fall for him...the stakes are too high.