Murder In Theater

A heating argument takes place between Producer Pawan Shrivastav and Sweety's Boyfriend Gajendar in the theater in regards to Sweety's song which did not appear till intermission in the movie thus, Pawan orders his Bodyguard Faisal to throw Sweety's Boyfriend Gajendar outside the theater but a worst incident occurs as the whole team observes Injection in Gajendar's hand and Producer Shrivastav was declared dead on the spot, later, Sweety requests K.D.Pathak to fight her Boyfriend's case as his is innocent and he agrees to save him, there in the jail, Gajendar reveals K.D.Pathak that he went to apologize as he insulted him, but he saw a syringe which was already inserted in his neck and he got caught while he was removing the syringe, there in the court, Defense lawyer reveals Judge that during his childhood he was sentenced to 4 months in reform house. There in the court, K.D questions Sunil who not only serves snacks during the movie but also checks movie tickets at the main door, later Director reveals court that he didn't observe usher in the theater as he was nervous and Assistant Director reveals Judge that he observed usher in the theater who didn't notice him when he was calling. Peon Gangaram tells K.D that Mr. Shrivastav's Wife use to always doubt on him and fight with him in regards to his affair later, Varun was shocked to see Faisal's cell phone which was missing in Shrivastav's office. Why is K.D doubting on Bhushan? Who killed Producer Shirvastav?