Midway through the film or thereabouts, there’s an interesting exchange between Bob Biswas (Abhishek Bachchan) – emerging after eight years in a coma, having lost all memory – and an enigmatic old pharmacist Kali-da (veteran Bengali film, TV and theatre actor Paran Bandopadhyay). He is a sort of conduit between Bob and the people pushing him back into his old trade as an assassin.