The Osiris Curse (Tweed & Nightingale Series #2)

Steampunk Sherlock Holmes meets The X-Files with a dash of romantic tension and a large dose of adventure. When Nikola Tesla is murdered and blueprints for his super weapons are stolen, Tweed and Nightingale are drawn into a global cat and mouse chase with his killers. What's more, it seems that the people who shot Nikola Tesla are the same people responsible for Octavia's mother's disappearance. As the two cases intertwine, Tweed and Nightingale's investigations lead them to a murdered arc...