The Lust Celebration (2019)

In a Diwali (festival of lights in India) night a couple found out a masked man standing in front of their apartment. They tried to call the police but the phone was not working, soon they went back to their apartment and search individually but no one was there. When finally they thought they were safe and locked the room, the masked man appears from behind and stab the wife. We got to know how her husband planned the whole thing and the masked man actually his boyfriend and he is gay. But soon the masked man stabbed the husband, and we realised how the masked man and the wife double crossed the husband, as the masked man actually prefers his wife than him. At the end both choked the husband to death while having their lovely moment, though the film ends with a surprising anticlimax for the wife and her lover.