Catching Fire was later released in ebook and audiobook format. "Catching Fire" received mostly positive reviews, with reviewers praising Collins' prose, the book's ending, and the development of Katniss's character. According to critics, major themes of the novel include survival, authoritarianism, rebellion and interdependence versus independence. The book has sold more than 19 million copies in the U.S. alone. A film adaptation, "", was released on November 22, 2013. After winning the 74th Hunger Games in the previous novel, Katniss Everdeen and Peeta Mellark return home to District 12, the poorest sector in the country of Panem. On the day that Katniss
Katniss Everdeen becomes a galvanizing symbol of rebellion against the oppressive Capitol. The idea for the trilogy was based in part on the myth of Theseus and the Minotaur, in which each year seven boys and seven girls from Athens are sent to Crete as tributes to that land to be devoured by the Minotaur, a cycle that continues until Theseus kills the Minotaur. Collins, who heard the story when she was eight years old, was unsettled by its ruthlessness and cruelty. Collins said, "In her own way, Katniss is a futuristic Theseus." Collins also characterized the novels with the fearful sensations