Amitav Ghosh's new novel, 'Ghost-eye,' explores themes of past lives and memory. The story begins in 1969 Calcutta with a young girl, Varsha, who claims to recall a previous life and knowledge of fish. A psychologist, Dr. Shoma Bose, investigates these claims. Decades later, during the COVID-19 pandemic, Shoma's nephew Dinu seeks to uncover what happened after Varsha's visit to her claimed ancestral village in the Sundarbans.