In todays era of Indian cinema different genres such as thriller rom-com mythological drama and more are flourishing. However do you know that when cinema was slowly coming into notice there was a film — a mystery thriller — that blew everyones mind? When normal films and their scripts seemed hard to digest this movie was a blockbuster and its intriguing storyline was loved by the audience. Despite being released six decades ago this films storyline is still cherished even today. Yes you read that right! The film we are talking about is Woh Kaun Thi released in 1964. Directed by Raj Khosla the movie featured Sadhana Manoj Kumar and Prem Chopra. Did you know Woh Kaun Thi was Indian cinemas first mystery thriller? With an intriguing storyline the movie and its songs became evergreen and even today people love to hear the songs from the film. After the success of this film Raj Khosla made two more suspense thriller films with Sadhana and they were also huge hits. The story of Woh Kaun Thi revolves around Doctor Anand (Manoj Kumar) who on a gloomy and rainy night finds a girl (Sadhana) on the roadside who wants to visit a cemetery. Following this the story takes twists and turns that kept the audience on the edge of their seats. The haunting activities begin from this part of the film when the lead character played by Manoj often sees the girl and he even gets married to her — but at the end of the film when the real cards are revealed it leaves everyones jaw dropped. According to media reports the film was made for Rs 20 lakhs and went on to earn Rs 1 crore 60 years ago which seems like a big achievement for any movie. Also Woh Kaun Thi became the highest-grossing film of that era claim reports by Zee News. The songs of this film — Lag Ja Gale Naina Barse Rimjhim Rimjhim and Jo Humne Dastaan ​​Apni Sunai — were well liked and are still heard even today. The film has got a rating of 7.5 on IMDb.