Gregor the Overlander is the first book of the Underland Chronicles by Suzanne Collins. It was published in 2003, and met with critical acclaim, including Kirkus Reviews Editors' Choice and New York Public Library's 100 Books for Reading and Sharing selection. It was featured by National Public Radio in the USA in 2005. It was Nominated for a Nutmeg Children's Book Award in 2006 in the intermediate category and came in third place. As of August 2011, users on Amazon.com had given the book a rating of 4.5 stars out of 5.
It introduces most of the characters involved in the city, and of course, the underland.