New from St. Martin's Minotaur: A Beautiful Blue Death by Charles Finch.
About the book, from the author's website:
When a maid in Mayfair drinks an exotic poison, is it suicide?
Or a case for Charles Lenox?
London, 1865. On a gray evening late in autumn, amateur detective Charles Lenox's closest friend needs help. A former servant of her house, Prudence Smith, is beautiful, a flirt, and dead. Was it an accident? A suicide? Or does the pile of gold in the house have something to do with it? As Lenox begins to uncover the truth another body falls at the most fashionable ball at the season, and the chase is on before the killer strikes again ... dangerously close to home.