Thamma', not first Hindi film about Betaal, THIS 1986 movie was

The highly anticipated film 'Thamma', featuring Ayushmann Khurrana and Rashmika Mandanna, has hit theaters today. Khurrana has clarified that the film revolves around 'Betaalism', drawing inspiration from ancient Indian legends rather than conventional vampire lore. However, this is not the first Hindi film based on Betaal. Let's learn more about it in detail.