Suren Uppal , 40, is a corporate lawyer with around 15 years of legal practice, first under former Attorney-General of India K. Parasaran and later under P. Chidambaram till the latter became a Union minister in UPA-1. Although the Essar Tapes do not fall in his ken of expertise, Uppal has gone full throttle ahead, even writing to prime minister Narendra Modi. He spoke to Ushinor Majumdar at his office in Noida. Excerpts: