I liked how this book brought in Grace who has dealt with the enhanced soldiers in the past and has even been attracted to Matthew but he always ends up being a douche bag to her and after they finally hook up he walks out on her. Little does he know she then goes to hang out with guy he hates and has had previous dealings with during their missions then leaves town before he can work out himself and tell her how he really feels. Next thing Grace is caught up in an explosion and has amnesia, she doesn't know what happened nor who to trust and while trying to piece things together she has to alpha males vying for her to be with them. This leads us on a great read of cat n mouse, double crossing, trust issues a roller coaster of emotions and hormones to try and work out what happened and who the Reaper is and if they can get to him before it is too late.