Black Friday was financed by Mid-Day. Producer Arindam Mitra approached Anurag to make a TV series on Zaidi's book. However, they later decided to make a film.Anurag also referred Voices, a collection of testimonies of the accused in the caseThe names of cops, politicians and bombers are real in the film. Kay Kay Menon played DCP Traffic Rakesh Maria, who probed the caseNaseeruddin Shah refused the role of Tiger Memon. He was replaced by Pavan Malhotra in a searing performanceThe film coralled the best actors of our times – Nawazuddin Siddiqui, Aditya Srivastava, Dibyendu Bhattacharya, Gajraj RaoMuch of the film was shot with hidden cameras. Since it depicts the early 90s, mobile phones and billboards had to be framed out or maskedIt's an incredibly funny movie in parts. A police officer pulls a banana from a crime scene to eat.Anurag had a suit tailored for the premiere. The film was banned the same day. 'I just went in to my room and started drinking. And I stayed in my suit for a month,” the director had said- The standout 7-minute chase sequence around Dharavi inspired Danny Boyle on Slumdog MillionaireVijay Maurya played Dawood Ibrahim in the filmIndian Ocean gave the music, including the haunting 'Bandeh'Anurag appears in one scene, on the boat landingThe film begins with the Mahatma Gandhi quote - 'An eye for an eye makes the whole world blind.' It also closes the film.According to one story, a Supreme Court judge saw the film privately and took initiative to lift the banYakub Memon, Tiger Memon's brother, was played by director Imtiaz Ali