Wikipedia
Humsaya
Humsaya (Neighbour) is a 1968 Hindi romantic spy thriller film produced and directed by Joy Mukherjee. The film was made under the newly established Joy Mukherjee Productions banner. The music direction was by O. P. Nayyar with lyrics by Shevan Rizvi, S. H. Bihari and Hasrat Jaipuri. The cast included Joy Mukherjee, Mala Sinha, Sharmila Tagore, Rehman, Sapru, Polson, Malika and Gajanan Jagirdar.
The story revolves around Joy Mukherjee playing the double-role of an Indian army officer and his look-alike Chinese officer, with Mala Sinha and Sharmila Tagore providing the romantic angle.