Underdogs by Geonn Cannon

Ariadne Willow is a private investigator with a secret weapon. She's a canidae, a person with the ability to transform into a wolf at will. Using her heightened senses to track and her shapeshifting to follow people without being seen, she's made a decent business for herself and her associate Dale Frye. When one of the richest women in Seattle wishes to hire her, Ari and Dale think their ship has finally come in. All Ari has to do is observe the client's tabloid-friendly daughter, fresh out of rehab, and confirm that she's truly clean. Ari thinks the case will be a piece of cake, but a moment of shocking violence changes everything. Soon Ari finds herself backed into a corner with no way out, forced to either run or risk losing everything she holds dear by fighting an enemy with unlimited power and resources. With Dale refusing to leave her side, Ari decides to make a stand to remind her enemies that there's only one rule in betting... Always bet on the underdogs.