Shades of gray - Maya Banks

P.J. and Cole were sharpshooting rivals on the same KGI team and enjoyed a spirited, uncomplicated camaraderie. Until the night they slept together. Then they're called up on a mission that goes terribly wrong and P.J. walks away from KGI, determined not to drag her team into the murky shadows she's poised to delve into. Six months later, Cole is still searching for P.J., determined to bring her back home. Bent on vengeance, P.J. is on a mission that will plunge her into game of revenge and the rest of the KGI is determined not to let her go alone.