First book in The Parasol Protectorate series by Gail Carriger. Paper back published Oct. 1, 2009. The Second book titled Changless published Apr. 1, 2010. The third book to be published Sept. 1, 2010, is entitled Blameless. Gail Carriger announced via twitter and her website that there will be 2 other books in the series: Heartless is due out Spring of 2011, and Timeless in the Spring of 2012.