On the second story of a low-rent apartment complex, two women are found murdered, the scene awash with blood.
One, a young nun from the local school, seems to have had the misfortune of being in the wrong place at the wrong time. The other, a local celebrity for all the wrong reasons, someone that was recently ousted from public office and is trying desperately to claw her way back into the spotlight.
Called in to investigate are two people that could not be more different, in their approach or in the organizations they represent. To one side is Detective Reed Mattox and his K-9 partner Billie, a duo that call the place where the crime took place home and are fast building a reputation for tackling the toughest cases in the city. Opposite them, Sydney Rye and her own canine sidekick, Blue, a duo representing a government agency that few have heard about, their style one that operates free from the sphere of public opinion.