What the Devil Knows
What the Devil Knows by C.S. Harris

is the latest Sebastian St. Cyr mystery, set against the historical backdrop of post-Napoleonic Europe. Aristocratic sleuth Sebastian investigates a brutal killing in the East End of London that could be a copycat of a three-year-old case--or could mean that an innocent man was punished, while the guilty party still walks free. This is an atmospheric thriller: fans of historical fiction will feel right at home.