6. Bharat Ek Khoj was a 53 episode Indian historical drama directed written and produced by Shyam Benegal in 1988 for Doordarshan. Its cast included Om Puri, Roshan Seth, Tom Alter, Lucky Ali, Irfan Khan, Piyush Mishra and many more. Narrated by Om Puri, this drama was based on a famous book written by the author during his imprisonment at Ahmednagar Fort in Maharashtra during the freedom struggle of India. Which book?