these films were based on original stories by Munshi Premchand , the giant of Hindi literature. [ edit ] Literary adaptations Ray adapted some well-known Bengali books for films, for example, the Apu trilogy and Ashani Sanket ( Bibhutibhushan Bandopadhyay ); Kapurush ( Premendra Mitra ); Mahanagar (Narendranath Mitra); Mahapurush and