Actor Avinash Tiwary is currently on a roll. The ‘Laila Majnu’ fame actor is all set to prove his versatility yet again as he will be seen in a never-seen-before avatar in Bejoy Nambiar’s crime drama ‘Kaala’. Recently, the trailer was launched where Avinash as IB officer Ritwik Mukherjee is seen chasing a big case of reverse hawala. Ahead of the release of the show, Avinash spoke at length about his character, his preparations and the process.