I am An advocate practicing in HIGH COURT, MUMBAI & District Court, Nashik
According to me there is some extramarital affair is going on between Dr. Talwar & Dr. durani. Arushi see something very unexpected i.e. both of them means Dr. Talwar & Dr. durani in one bed. And by this incident Dr. Talwar get feared & so to vanish all his fear he killed HIS OWN DAUGHTER ARUSHI. THEN AT THIS TIME HEMRAJ COMES THERE BY LISTENING THE VOICE OF ARUSHI SO DR. TALWAR ALSO KILLED HEMRAJ.