This blockbuster had 3 superstars, all died in four years, actress' death became mystery for years, her name is.., film is...

In 1989, Yash Chopra brought Sridevi, Rishi Kapoor, and Vinod Khanna in Chandni. The movie became one of the highest-grossing films of that year. However, decades later, the primary cast passed away within four years.