I read somewhere someone update his idea... and feel it could be possible:
1) Hemraj, krishna and 3rd person might be drinking alchohol in Hemraj room. 2) Rajesh talwar might had a fight with Aarushi one some matter. 3) Rajesh hit her and Aarushi's head hit the wall. 4) Aarushi died instantly 5) It was an acceident 6) Hemraj and gang came running. They saw and discussed the matter 7) Rajesh talwar suggested to show this accident as murder 8) He asked someone from 3 to slit the throat of Aarushi 9) Hemraj being close to Aarushi (since he used to take care of her) did not agree to this. 10) Either Krishna or that 3rd person killed Hemraj. 11) They slit both of their throat 12) They put the Hemraj body on terrace so that they can dispose it later. But never got a chance for it 13) Since Nupur knew that it was an accidential death, she is supporting Talwar as she does not want to loose her husband now.
