"One of Us" is a non-fiction book by Norwegian journalist Åsne Seierstad. The book was originally published in Norwegian in 2013 under the title "En av oss: En fortelling om Norge" (One of Us: A Story about Norway), and later translated into English. The book delves into the events surrounding the 2011 Norway attacks carried out by Anders Behring Breivik, who killed 77 people in a bombing and mass shooting. Seierstad meticulously researched the backgrounds of both Breivik and his victims, as well as the aftermath of the attacks and the impact they had on Norwegian society. Seierstad's work is known for its in-depth investigative journalism and its attempt to understand the motivations behind such acts of terrorism, as well as the broader societal implications. "One of Us" offers insights into extremism, nationalism, and the complexities of modern society, making it a compelling and thought-provoking read for those interested in understanding the roots and consequences of violent extremism.