Bloodless Shadow by Victoria Blake
The detective in this mystery is a woman carrying a secret from herself. It is a portrait of the emotional remifications of abuse, particularly that aloofness and hardness that signals self-protection.
Sam(antha) Falconer is a fighter. Never gives quarter to anyone. But it becomes apparent that her self-deception affects her professional behavior as she risks her life and others with her recklessness.
This portrait is more important that the mystery itself.