Instruct: Classify a given review as either positive or negative.
Query: An excellent detective story

Sarah Dunant writes really good detective novels -- so good that I wish she hadn't moved on to historical fiction. Her smart protagonist, Hannah Wolfe, is both cynical and vulnerable, and the secondary characters are extremely well drawn. BIRTH MARKS will grab you with a shocking early development that most authors wouldn't dare employ, but Dunant makes it work. Definitely recommended for readers who like V.I. Warshawski and other strong female sleuths.