The Blackmailing Witness - Part 2

An investigation of the girl's injuries reveals that only an Ambassador brand car could have injured her in such a way. With this clue, the search begins for the car and the driver. Meanwhile the driver goes to pay off the blackmailing witness to keep him quiet. But when he reaches the destination, he finds the witness lying there, dead. He gets a call from another man, demanding 10 lakh rupees as ransom for staying quiet about the hit-and-run case, and now, this murder that he has been set up for. Who is this man?