An anonymous whistle-blower and an astounding 2600 GB of data. A giant leak of 11.5 million financial and legal records. A global collaboration of over 100 news organizations working in twenty-five languages in eighty countries. The Panama Papers exposed in black and white the crime and corruption of the rich and powerful who stashed away their wealth in tax havens. It shook the world with what investigative journalism could achieve through an alliance between an individual whistle-blower and a coalition of global media. Now, for the first time, award-winning journalists Sarin, Mazoomdaar and Iyer tell the backstory of hot leads and cold trails, of open denial and veiled intimidation. This book is the India story of the mega investigation.