The Underland Chronicles is a series of five epic fantasy novels by Suzanne Collins, first published between 2003 and 2007. It tells the story of a boy named Gregor and his adventures in the "Underland,” a subterranean world located under New York City. The Underland is inhabited by humans who traveled below hundreds of years ago, along with various giant versions of creatures like bats, cockroaches, and rats. According to the author, the series involves many topics relating to war, including biological warfare, genocide, and military intelligence. While not as well known as the author's subsequent Hunger Games trilogy, it has been reviewed favorably by many critics. Books Gregor the Overlander Gregor and his two-year-old sister Boots fall through a vent in their apartment basement and find themselves in a strange place called the Underland, inhabited by giant animals and pale humans. The Underlanders name Gregor "the warrior" and Boots the "princess" of a prophecy written hundreds of years ago by their founder, Bartholomew of Sandwich. Gregor must go on a quest mentioned in the prophecy to save his lost father, a PoW in a war between the humans and the "gnawers.” Gregor and the Prophecy of Bane Gregor is caught up in one of Bartholomew of Sandwich's prophecies once again when Underlanders kidnap his baby sister for her protection, and he reluctantly returns to their subterranean world. The Regalians convince him to embark on a quest to kill a dangerous rat called the Bane whom both the rats and humans believe will lead the gnawers to conquer the Underland. Along the way, Gregor struggles to come to terms with the death of several friends; a newly discovered and very terrifying talent; and the morality of what the Underlanders have asked him to do. Gregor and the Curse of the Warmbloods A mysterious plague has broken out in the Underland, and yet another of Sandwich's prophecies leads the warm-blooded creatures of the realm to organize a quest for the cure, supposedly located in a dangerous underground Jungle. Gregor is terrified for his friends and more than willing to help, especially as his own mother and bond lie dying in the Regalian hospital. The more they learn about the plague and the political situation of the Underland, however, the more the quest group begins to fear something worse than a simple disease. Gregor and the Marks of Secret The Bane takes