Mehmaan is a 2018 Hindi-language Drama Thriller film. What starts off as an innocuous conversation morphs into an exchange of secrets and favors, culminating into a spine-chilling climax. Mehmaan stars Saheb Bhattacharya, Koushik Sen and Raima Sen. What starts off as an innocuous conversation morphs into an exchange of secrets and favors, culminating into a spine-chilling climax.