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 is "the only person she's certain she loves". Collins has described Katniss as being an independent strong survivalist, lethal, but good at thinking outside the box. Katniss's past hardships (her father's death, mother's depression, and near starvation) have made her a survivor, and she will endure hardship and hard work to preserve her own life and the life of her family. She states herself that nice people are the most dangerous because they get inside of her and that they could hurt her badly when she least expected it. She has shown she will protect those she loves, no matter