God is in the details, they say. That explains why Aditi Rao Hydari, who is playing the female lead opposite Karthi in Mani Ratnam’s film Kaatru Veliyidai, is learning to speak Tamil perfectly. And her tutor is none other than Ratnam who’s making sure she gets her accent and intonation right. Other cast members include Shraddha Srinath, Delhi Ganesh, RJ Balaji and KPAC Lalitha.