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A young teenage girl was murdered in her own home in Noida (Delhi region) in 2008. This is the story of that investigation. An investigation so bungled by cops, so beset by prejudices, corruption and ego problems within the police and CBI that there is no definite answer till today.
There were two schools of thought - First: The parents found the girl in a compromising position with the family's domestic help, and killed both in a rage - An Honor Killing.
Second: The domestic let some friends in and they killed the girl. This movie is sympathetic towards the parents.
You can also read up on Aarushi Talwar murder case on Tehelka, Business Standard, BBC, and all Indian newspapers. Patrick French actually devoted a whole chapter to this case in his book INDIA.
If you want to learn how murder investigations happen in India, go watch this movie. No matter which side you lean on, the stupidity of cops will frighten and amaze you at the same time.