I wonder why people are so intent on Beliving what lazy Noida police said!!
If someone should think Talwar's killed their only daughter, on whom they had invested emotionally and financially for 14 years, there must be very strong motive than just having an affair!! Which at best causes some embarrassment at the most.
So, without a strong motive it is stupid to believe that they are getting away with murder.
And to think that the only reason Noida police thought Talwar's killed Arushi was based on Krishna's evidence makes it all the more difficult!!