The Daughters of Gentlemen — Linda Stratmann

The second book in the series of Victorian murder mysteries set in London, with a clever and determined female sleuth Frances Doughty is a young sleuth on her first professional case, trying to discover who distributed dangerously feminist pamphlets to the girls of the Bayswater Academy for the Education of Young Ladies. Armed with only her wits, courage, and determination, she finds that even the most respectable denizens of Bayswater have something to hide, and what begins as a simple task soon becomes a case of murder. As election fever erupts and the formidable ladies of the Bayswater Women's Suffrage Society swing into action, Frances' enquiries expose lies, more murders, and a long-concealed scandal -- and she makes a powerful new friend.