And after a while when the detectives could not find out who the serial killer was they sent a smart detective. The smart detective tried to find out the profile and daily routine of the people who had died. One a music composer, one a ordinary student, one some old teacher. The smart detective noted everything about the dead people and fed it into a computer. The computer was this world's best data mining computer. It processed all the data for 77 hours and found out ONE common thing about all the dead people. They all had seen my unfinished movie without sound and music.