Retribution - Alexandra Drummond Thriller Series, #1

Alexandra is haunted by the brutal murders of her husband and best friend, and takes matters into her own hands, infiltrating the police force with a hidden agenda. As a member of an elite unit, Alexandra is armed and prepared to confront the terrorists responsible for the devastating loss in her life. However, the stakes escalate when a routine escort patrol goes wrong, forcing Alex to respond with aggression.
The surge of adrenaline may have uncovered clues, but it also places her own status in jeopardy. Caught between her quest for justice and the consequences of her uncontrolled actions, Alexandra becomes the target of senior police reprimands. Isolated and facing the repercussions of her impulsive decisions, she struggles to stay true to her personal mission.