Dark Approach, Book 12 of the Incognito Series  (English, Paperback, Wiesner http:, www.karenwiesner.com Karen)

Network operatives and lovers Lucy Carlton and Vic Leventhal have spent years living in shadows, the property of the covert organization they gave their loyalty to in the lofty pursuit of justice for all. Disillusioned, they're now determined to live their lives on their own terms. When the Network's arch enemies, a terrorist organization called R.E.D., secretly approach the two about defecting-freedom for information that will disable the Network-the couple must choose between love and loyalty. In the process, they jeopardize the Network's anonymity...and its very existence.