The film focuses on the prison life of Vaikom Muhammad Basheer and the love between him and Narayani, a female inmate of the prison, who remains unseen throughout the film.
| Directing | Adoor Gopalakrishnan | Director |
| Writing | Vaikom Muhammad Basheer | Novel |
| Writing | Adoor Gopalakrishnan | Screenplay |
| Production | Adoor Gopalakrishnan | Producer |
| Sound | N Harikumar | Sound |
| Camera | Mankada Ravi Varma | Director of Photography |
| Editing | M. Mani | Editor |
| Sound | Vijaya Bhaskar | Original Music Composer |