Murder on Sisters' Row — Victoria Thompson

With the help of a charitable lady of means, midwife Sarah Brandt rescues a young woman and her newborn from the brothel where the mother was forced to prostitute herself. But their success comes at a high price when their benefactor is found murdered.

Though the brothel's madam is immediately considered a suspect, Sarah and Sergeant Frank Malloy investigate, uncovering some unpleasant truths about the victim and her charity-and the woman and child Sarah risked her own life to save.