Ek Din Achanak , a 1990 drama/bollywood movie released on 1/1/1990 starring Shabana Azmi, Shreeram Lagoo, Roopa Ganguly, Anjan Dutt, Uttara Bavkar, Aparna Sen, Manohar Singh, Anil Chatterjee, Lily Chakraborty, Arjun Chakraborty, produced by Mrinal Sen under the banner of National Film Circuit. A retired professor suddenly goes missing with no clues left behind. His family struggles to discover the reasons for his disappearance as they get back to their daily routine..