Rosemary and Rue is the first book in the October Daye series. As a series, it’s more than a little bit similar to the Dresden files, combining fantasy and detective fiction, but I honestly prefer McGuire’s series.
Brief plot summary
October “Toby” Daye is a changeling private detective, half human and half sidhe. Forced to investigate the murder of a powerful figure in the faerie courts by the victim’s dying curse, Daye’s investigation will take her from San Francisco to the faerie realms and back, bringing her into conflict with more than one important figure from her past.
I realize this summary sounds terrible and melodramatic, that’s my fault, not this book’s.