There is a surprise element in the film 'Kalam' that releases this weekend. The makers of Kalam were super-thrilled to rope in a popular veteran actor for a significant role in the film but they do not want to spoil the surprise by revealing the name. Apart from this actor, the suspense thriller also stars Lakshmi Priya, Amzath, Shrini and Pooja in lead roles. A house where most of the movie was shot plays the central part of the movie. The film is directed by Robert Raaj and Arul movies production is bankrolling it.