The biography will release on July 26, its publisher Pan Macmillan announed on Wednesday, Pushkar's 58th birth anniversary.
In search of answers, Sunanda Mehta, journalist and Pushkar's former schoolmate, traces her subject's life from her early days in cantonment towns to her first two marriages, a largely unknown stint in Canada, her rise as a Dubai businesswoman and finally her much-publicised years with Tharoor until her controversial death shook the nation.
"Through the soaring highs and wrecking lows that marked her years, Sunanda Pushkar lived with passion, ambition and defiance. This definitive biography is the account of her phenomenal life and its turbulent end," a statement said.
Sunanda Mehta is a senior journalist with over 25 years of experience. Beginning her career with magazines such as Femina, Savvy and Society, she went on to become the founding editor of the Pune magazine Citadel. She moved to the Indian Express next and worked there for over two decades.
From 2010 to 2017, she was Resident Editor of the newspaper's Pune edition. A former Chevening fellow, she has also been a visiting lecturer at the Savitribai Phule Pune University. Mehta divides her time between Pune and Mumbai. "The Extraordinary Life and Death of Sunanda Pushkar" is her first book.