If you'd like a period mystery with a bit of sci-fi/fantasy/steampunk flavor, with lots of snark and a fun female protagonist, I can't recommend enough Soulless (The Parasol Protectorate) by Gail Carriger. The first book, Soulless, is stand alone, but it's followup, Changeless sets up for a bigger story arc to be continued in Blameless (out Sept 1).