Kareena Kapoor Khan as Mrs D'Souza is wonderful and very powerful. She shows the right amount of anger, fear and vulnerability in her performance. Clearly, Kareena has so much to give as an actor and directors like Sujoy Ghosh can extract that. Jaideep Ahlawat is undoubtedly the pick of the actors in Jaane Jaan. He is spooky, creepy and too interesting to watch as Naren, the Mathematics teacher. His Jail sequence towards the end of the film is brilliance personified. Vijay Varma as inspector Karan Anand has a remarkable outing. This man never seizes to impress. He has really worked hard on the action in the film and it shows onscreen. Saurabh Sachdeva as Mrs D'Souza's husband Ajit Mhatre is menacing. He delivers back to back two superb performances, first with Bambai Meri Jaan and now with Jaane Jaan. Every other supporting actor in Jaane Jaan does well and only helps in elevating the film.