Four new cast members have been announced for the upcoming biopic, 'I Saw the Light,' about the life of Hank Williams. According to the Hollywood Reporter, David Krumholtz, Josh Pais, James DuMont and Wrenn Schmidt have all been added to the movie.

Krumholtz, who is currently starring in the film 'The Judge,' will play James Dolan, a New York journalist who conducted one of Williams' toughest interviews of his career. 'Law & Order: SVU' star Pais has been cast as Dore Schary, a former production manager at MGM who attempted to convince Williams to parlay his fame into becoming a movie star.

Dumont, who recently appeared in the James Brown biopic 'Get On Up,' will play WB Nolan, a music promoter and small-town mayor who tried to get Williams to perform in spite of his inebriated state. Schmidt, best known for her role on 'Boardwalk Empire,' was chosen for the role of Bobbie Jett, one of Williams' several girlfriends, who gave birth to his daughter Jett five days the country star's his death.

Previously announced cast members include Tom Hiddleston, who will play Williams; Elizabeth Olsen, who will portray his first wife, Audrey Mae; and Maddie Hasson, who was cast as Billie Jean Horton, Williams' second wife.

'I Saw the Light' is directed by Marc Abraham. Rodney Crowell is serving as the movie's musical producer. Filming is scheduled to begin in Louisiana this week. The film is slated for a 2015 release.