Watch Online Free on Watchseries. Nellu is a 2010 Indian Tamil language drama film written and directed by M. Shiva Shankar. It stars debutants Sathyaa and Bhayaganjali in the lead roles, while Senthil Rajan has handled the camera and S. S. Kumaran has composed the music. The film is based on the Kilvenmani massacre incident that happened in 1968.