Definitely Dr Talwar is involved in the whole issue because .. 1. He has taken extra interest in wiping out the traces like .. cremation of body, disposing off the carpet , bed sheets etc from the site of murder. However it is also possible that he would have touched the body of Arushi after the murder just to cover the body in whatever condition he has seen her body. As a father any one would have done this. 2. Hemaraj , Krishna might be involved in some affair with the girl and due to rivalry Krishna might have murdered Hemaraj and because Arushi saw the scene, he would have murdered her too. 3. The Noida police extracted money from Dr Talwar and helped him to wipe out the traces so that the case gets closed. 100 % Noida police are involved in misplacing the Kukri and made good money. They must have theatened Dr Talwar of dire consequences if he doesnot part with money. 3. Fisrt of all CBI must look into whether any money transaction has been done in his bank account after the death, during police custody. It could be even their distant rrelatives or friends. All telephone calls must be traced and that persons account must be verified for any money withdrawls. This would help to know the police involment. 4. Police are just beasts of sort who wants extarct money at any opportunity. If possible it would be better to conduct the investigatings teams Narco done to get to the truth out of them. 5. There is a technique called "Spirit Come", through which we can call