"True Grit" is a novel written by Charles Portis in 1968, which tells the story of a young girl named Mattie Ross seeking revenge for her father's murder. She hires a tough U.S. Marshal named Rooster Cogburn to help her track down the killer, Tom Chaney. The story is set in the American Old West and explores themes of justice, bravery, and determination. The novel has been adapted into two films, one in 1969 starring John Wayne and another in 2010 directed by Joel and Ethan Coen. Both adaptations received critical acclaim, with the 2010 version earning several Academy Award nominations.