Bollywood actress Vidya Balan will play former Prime Minister Indira Gandhi onscreen in a project based on journalist-author Sagarika Ghose book "Indira: Indias Most Powerful Prime Minister. "She said that she is happy to have acquired the rights to Sagarika Ghose`s `Indira...` because she has e always wanted to play Indira Gandhi. The book, published by Juggernaut Books, is a no-holds-barred biographical portrait that looks for answers to lingering issues: from why Indira Gandhi revoked the Emergency to her son Sanjay`s curious grip over her; and from her bad marriage and love affairs to her dangerous religious politics.