Bala, known for making offbeat movies kept a real test for his heroine for his upcoming movie Naan Kadavul. Earlier embarked on his quest for the right face, he had booked Bhavna who could not give dates for him. Later he chose Parvathy but found her unsuitable for the role. He then decided on Karthika and wanted to put her into some real test. She and the movie's cameraman had walked through the streets of Periyakulam, shooting destination for Naan Kadavul, dressed and made up as beggars asking for alms. The interesting point is that they had collected Rs.47.50 at the end of the day and was absolutely unidentifiable under their guise. Bala was all praise for Karthika and had confirmed her role. Naan Kadavul is kindling the curiosity of the audience in many a number of ways.