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 12 has only three living victors: Katniss, Peeta, and Haymitch, who won the 50th Games and successfully mentored Katniss the year before. As Katniss is the only living female victor in District 12, she is the only possible female tribute, and Peeta volunteers to take Haymitch's place when Haymitch is selected. Katniss and Peeta return to the arena, working closely to survive and forming alliances and close friendships in the process, particularly with Finnick Odair, who resuscitated Peeta in the arena. During this time Katniss begins to realize she has feelings for Peeta. Katniss is taken from the arena and