Where can I watch Drifter: Henry Lee Lucas in United States?

Inspired by one of America’s most prolific and controversial serial killers, this movie details Henry’s life from his abusive childhood in Blacksburg, Virginia to his violent killing sprees as he drifted across the south with his best friend and young fiancé. Concurrently the film also follows the story of how Henry duped the Texas Rangers by confessing to many more murders.