This time the London institute, which took in Tessa after her brother Nate tried to sacrifice her, is under investigation. It appears Mortmain and the Magister are behind their troubles, forcing the gang to go after them before they loose their home.
Sure, the gang travels and searches for Mortmain in unthinkable places, but it is the love triangle plot behind Will, Tessa, and Jem that gives us the best diversion. Will's past reveals itself despite his attempt at keeping it hidden, making us see that maybe we judged him too soon. Perhaps Will is the best choice for Tessa after all?
Also, a few new characters are introduced, including the humorous Bridget Daly who enjoys singing mournful songs while cooking.
If you are looking for a book that packs action, romance, and a dash of steampunk, make sure to give Clockwork Prince a shot.