Sushant Singh Rajput’s character in Dibakar Banerjee’s next might be based on a fictional sleuth from the ’40s, created by Bengali author Sharadindu Bandyopadhyay, but we’ve learnt that the female lead is based on a real person.Dibakar has sketched actor Swastika Mukherjee’s character along the lines of Mata Hari, the Frisian dancer who was executed by the French under charges of espionage for Germany during World War I. "Swastika’s character hails from Kolkata and is mysterious like Mata Hari. She’s like a double agent who represents the good and evil sides of our life. It’s a very perverse, yet femme fatale sort of character. I don’t think anyone has essayed such a role since Nadira, who played a few femme fatale roles in her heyday. I feel that Swastika will remind you of Nadira," says Dibakar.