Actor-casting director Abhishek Banerjee known for his work in 'Mirzapur', 'Pitchers', 'Stree' and 'Paatal Lok', has joined the cast of courtroom thriller film 'Section 84'. The film stars veteran Bollywood megastar Amitabh Bachchan in the lead role and is being helmed by Ribhu Dasgupta of 'Teen' fame.