My Conan Diary

The first case that newly joined detective Chen Rui took over was full of strange contradictions. Rich businessman Liu Mingda died at home. The scene was shocking: large amounts of blood showed that at least four people had suffered accidents, but in the end only one body was found. The life and death of the remaining three persons are unknown and there is no trace at all. The only clue is the twisted mark in the pool of blood - an ominous "7".