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 model and a box-office powerhouse. But Katniss is more than a movie icon now: Her three-fingered salute, used in Mockingjay as a signal of rebellion against the Capitol, has become a rallying symbol among pro-democracy protesters in Thailand and Hong Kong. Actresses Lyndsy Fonseca and Kaya Scodelario expressed interest in the film and received scripts in October 2010, while Oscar-nominated actress Hailee Steinfeld met with director Gary Ross. Chloë Grace Moretz, Malese Jow, and Jodelle Ferland publicly expressed interest in playing Katniss. Lionsgate confirmed in March 2011 that about 30 actresses either met with them or read for the role,