Edge of Temptation — Gennita Low

Walker, Titan's newest recruit, has been sent to rescue Nadine Kincaid, DARPA's scientist working on a special state-of-the-art exoskeleton for COS Command's Super Soldier Spy Project. Instead, the tied-up Nadine turned out to be Nadia, Nadine's twin sister, who has been protecting her sister all along. Now the two of them have to work together to keep the newest exoskeleton blueprints out of the enemy's hands.