A covert mission A royal demand And a race against time The fourth title in Genevieve Cogman's witty & wonderful The Invisible Library series The Lost Plot is an action-packed literary adventure In a 1920s-esque America Prohibition is in force fedoras flapper dresses & tommy guns are in fashion & intrigue is afoot Intrepid Librarians Irene & Kai find themselves caught in the middle of a dragon vs dragon contest It seems a young librarian has become tangled in this conflict & if they can't extricate him there could be serious political repercussions for the mysterious Library & as the balance of power across mighty factions hangs in the balance this could even trigger war Irene & Kai find themselves trapped in a race against time (and dragons) to procure a rare book They'll face gangsters blackmail & fiendish security systems & if this doesn't end well it could have dire consequences for Irene's job & incidentally for her life