 The film was also somewhat autobiographical for <unk> , relating to his dealings with the House Un @-@ American Activities Committee . A screenwriter during the 1930s and ' 40s , he had been involved with the Communist Party in the 1930s and refused to name names at his first <unk> appearance . Ultimately he changed his mind and identified friends and colleagues as party members . Similarly , <unk> sells his soul and betrays the one person who really knows and loves him in a <unk> pact to gain character . 
