they were doctors themselves and got the illegal advice from the likes of corrupt policemen(retired) k k gautam , they cleaned the crime scene , the main door was locked from outside ,and nupur herself gave the key to maid to open the main gate ,because couple was locked inside the house , the terrace where the servant was kep murdered was key locked , which was a rare event , it used to be kept open normally , yes there is no witness , but the circumstantial evidence was so strong that there was hardly any doubt , moreover the modem/
router was in girls room which was switched off late at night by someone , presumably by parent , means they were not asleep until quite late , the body of girl was cleaned ,private parts washed and postmortem doc was paid or told to give false report and then they said they didnt know how it happened , the room partition was very thin too ,and they kept sleeping , yes i would believe that shit