Nishi Agrawal found her husband Rakesh murdered in their home, with the caretaker Varun now a prime suspect. She discovered her bedroom door was locked from the outside, prompting immediate action from the cook Amar. They found evidence of a potential gas leak, indicating a possible motive for arson. Police believe the murder occurred between 12:30 am and 2:00 am while Varun was seen on CCTV escaping around 2:15 am.