Pyar Hi Pyar
The first investigation for a rookie police constable is finding the missing father of a young woman he winds up falling desperately in love with.
Starring Vyjayanthimala, Dharmendra, Pran, Helen, Dhumal, Raj Mehra, Madan Puri, D.K. Sapru, Manmohan, Sulochana Latkar
Watch "Pyar Hi Pyar" on Plex Free released in 1969. It's a romance and drama movie, and has a rating of 7 out of 10 from Imdb which is usually fine for this kind of movie, and is currently available to watch for free.