Cool in Tucson (A Sarah Burke Mystery)

Tucson police detective Sarah Burke, smart and ambitious, worries that Sergeant Delaney, her superior on the homicide squad, seems to have a grudge against her. Still smarting from a painful divorce, she puts personal concerns aside to concentrate on a body found in a parking lot. The case takes a bizarre turn when Sarah's young niece, Denny, neglected by her substance-abusing mother and struggling to stay in school, disappears. The search is complicated by interference from the drug ring that the suspected murderer's been working for, and Sarah's growing romantic interest in a troubled colleague rebuilding his life after injury...