After losing their parents young, sisters Wynne and Celeste build hard, dangerous lives: Wynne becomes a precise assassin, while Celeste runs women and business with ruthless control. Wynne has learned to separate work from desire, but a new assignment and an unexpected attraction threaten that discipline. As loyalty to her sister collides with the possibility of intimacy, she must decide whether survival means remaining untouched or risking the life she has never allowed herself to imagine.